look for permissions problems since apache does not have access to your files.
Also you are asking us how you can fix your car because is not working anymore. We can't help with that, you need to give us more details, post the permissions of your public_html directory and other things.
Also, running /scripts/whatever is a very bad idea if you do not know what you are doing. Running chownpublichtmls most probably messed up your permissions further, luckily it only applies for public_html.
Your best bet and my advise is to switch to a managed VPS.
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