Absolutely clueless about Reddit and it's consequences

Hi! I am 19M, and created this account 4 years ago. I started using Reddit recently when it was recommended by a friend of mine from college when I was having relationship issues. I posted some stuff and got great response in one of the posts (idk if 17k views is considered great here). Anyways, I just wanted to introduce myself and wanted to ask some general questions to understand Reddit better.

1. Most important - is there a chance of my identity being revealed? I got to know that Reddit is the only place where you can ask anything without being judged by your past, I don't want anyone to know who I really am

2. Is the help here genuine? Will the advice be useful or will I just hear opinions from several perspectives for any problem I have?

3. Has it helped anyone long-term or is it a timepass app?

Thanks for all help, hoping for informative replies.