Database Error when logging into wordpress

I can access my website but can’t log into my wordpress website. When I do that I get Database error. I tried doing repairing database but it still showed my database error.

I don’t know what happened but I haven’t changed anything since last week.

I have also tried restarting mysql using and this was the output:

~# sudo service mysql start
Job for mysql.service failed because the control process exited with error code.
See "systemctl status mysql.service" and "journalctl -xe" for details.

Then I ran both command for details

~# systemct1 status mysql.service

Command 'systemct1' not found, did you mean:

  command 'systemctl' from deb systemd (245.4-4ubuntu3.17)
  command 'systemctl' from deb systemctl (1.4.3424-2)

Try: apt install <deb name>

un 02 19:02:35 database-name sshd[2433]: Failed password for root from 61.177.172.124 port 16909 ssh2
Jun 02 19:02:37 database-name sshd[2435]: Failed password for invalid user assem from 181.28.152.134 port 44754 ssh2
Jun 02 19:02:37 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.225.136 DST=my-ip-address>
Jun 02 19:02:38 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.225.136 DST=my-ip-address>
Jun 02 19:02:38 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.225.136 DST=my-ip-address>
Jun 02 19:02:38 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.225.136 DST=my-ip-address>
Jun 02 19:02:39 database-name sshd[2433]: Failed password for root from 61.177.172.124 port 16909 ssh2
Jun 02 19:02:40 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.225.136 DST=my-ip-address>
Jun 02 19:02:40 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.225.136 DST=my-ip-address>
Jun 02 19:02:40 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.225.136 DST=my-ip-address>
Jun 02 19:02:41 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.225.136 DST=my-ip-address>
Jun 02 19:02:42 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.225.136 DST=my-ip-address>
Jun 02 19:02:42 database-name sshd[2433]: Failed password for root from 61.177.172.124 port 16909 ssh2
Jun 02 19:02:44 database-name sshd[2433]: Received disconnect from 61.177.172.124 port 16909:11:  [preauth]
Jun 02 19:02:44 database-name sshd[2433]: Disconnected from authenticating user root 61.177.172.124 port 16909 [preauth]
Jun 02 19:02:44 database-name sshd[2433]: PAM 2 more authentication failures; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.177.172.124  user=root
Jun 02 19:02:47 database-name sshd[2442]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.177.172.124 >
Jun 02 19:02:49 database-name sshd[2442]: Failed password for root from 61.177.172.124 port 19411 ssh2
Jun 02 19:02:51 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=192.241.222.168 DST=137.184.129.>
Jun 02 19:03:04 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=185.156.74.58 DST=my-ip-address>
Jun 02 19:03:12 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=123.195.71.106 DST=137.184.129.2>
Jun 02 19:03:19 database-name sshd[2449]: Invalid user ems from 59.103.236.31 port 22559
Jun 02 19:03:19 database-name sshd[2449]: pam_unix(sshd:auth): check pass; user unknown
Jun 02 19:03:19 database-name sshd[2449]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.103.236.31
Jun 02 19:03:21 database-name sshd[2449]: Failed password for invalid user ems from 59.103.236.31 port 22559 ssh2
Jun 02 19:03:23 database-name sshd[2449]: Received disconnect from 59.103.236.31 port 22559:11: Bye Bye [preauth]
Jun 02 19:03:23 database-name sshd[2449]: Disconnected from invalid user ems 59.103.236.31 port 22559 [preauth]
Jun 02 19:03:26 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=71.6.232.8 DST=my-ip-address L>
Jun 02 19:03:40 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=222.103.167.144 DST=137.184.129.>
Jun 02 19:04:02 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.60.179 DST=my-ip-address>
Jun 02 19:04:03 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.60.179 DST=my-ip-address>
Jun 02 19:04:04 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.60.179 DST=my-ip-address>
Jun 02 19:04:04 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.60.179 DST=my-ip-address>
Jun 02 19:04:05 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.60.179 DST=my-ip-address>
Jun 02 19:04:05 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.60.179 DST=my-ip-address>
Jun 02 19:04:06 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=136.185.75.237 DST=137.184.129.2>
Jun 02 19:04:06 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=2.147.60.179 DST=my-ip-address>
Jun 02 19:04:37 database-name kernel: [UFW BLOCK] IN=eth0 OUT= MAC=9e:b4:bd:34:f5:51:fe:00:00:00:01:01:08:00 SRC=183.136.225.42 DST=137.184.129.2>
Jun 02 19:04:41 database-name sshd[2453]: Invalid user cinzia from 59.103.236.31 port 36167
Jun 02 19:04:41 database-name sshd[2453]: pam_unix(sshd:auth): check pass; user unknown
Jun 02 19:04:41 database-name sshd[2453]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.103.236.31
Jun 02 19:04:43 database-name sshd[2453]: Failed password for invalid user cinzia from 59.103.236.31 port 36167 ssh2

Now I don’t know what to do. Please help me out