my wordpress site gets a 500 error that keeps coming back [closed]

I am hosting a website and every now and then I get the 500 error on the website.
I went through all of it:

  • checking permissions and chmoding
  • removing the .htaccess and rewriting it
  • disabling plugins (i only have the acf plugin )

when i fix the error, it comes back the next day without me even touching the files :/