What droplet do you recommend to me? I really need help!

I’m creating a giveaway website and want to know that droplet do you recommend to me. I really don’t know anymore what to do after 2 failed attempts. I need to run the website without receive the “508 Resource Limit Reached” or something like this. The traffic isn’t too high at the beginning, but I really want to hang the server up for at least between 500 and 1000 users online simultaneously.

On my first attempt, I created a $5 droplet and created my website. Conclusion: I got the the “508 Resource Limit Reached” error with less than 100 users online at the same time (between 30 and 50 to be more exact). I know that a $5 is a ordinary value and wouldn’t hang a lot of users, but I was surprised when the site went down with so few users. Well, after this, I decided to close the droplet and migrate to something with a better cost benefit. After a lot of searching, I found the hoster FastComet. I saw very good reviews for his services, mainly with Wordpress… I was wrong. Was the worst thing that I did on the last months. I literally ripped $26.

When I searched, I saw that the his specifications were higher than from the $10 droplet, and decided to hire it. BUT… I forgot a simple detail: they work as a shared hosting. It broke me down. I launched the website and got the same error than before… but this time with a help of the support, I saw that the problem was caused by a plugin, and not the server itself. So I had to rework the website without this plugin and today, launched it, I didn’t got anymore the error (The site literally stopped to work until the support make a backup), but I had the same problem of Resource Limit Reached. They gave me 60 Number of Processes and 30 Entry Processes. It increased so fast that when the site reached 50 users online, I got the “Resource Limit Reached” error. Until the users leave the site, and the Processes decreased. I never used a shared host before, and don’t know if this really is normal or if this hosting is a sh**t. But was the cheapest for a beginning for me. I haven’t so much money for a GoDaddy or other shared hosting and don’t know/have experience to judge what host is better.

Well, now that I know that a plugin caused all that problem with my droplet and shared host at the beginning, I want to know if it will fit with what I want. Between 500 and 1000 users online simultaneously. Or if I will need a better droplet, of $10 or even $20. Because in less than 1 week I had the worst service ever on my life and never gotta go back to a shared host.

Please, give me suggestions. Remembering that I’m newbie too, so I don’t know so much things about it. I’m just learning.

If you want more specifications or informations or the plugins that I’m using, just ask me. I need so much of a good and clean answer for it.