If you have the knowledge and understanding to build such a system from the ground up, and you can translate that knowledge into a set of very detailed instructions, you might be successful in this. If you can't, you will not.

The fact that you couldn't fix a bug it introduced by just rolling back to an earlier commit and trying something different tells me a lot. You likely don't have the domain knowledge to build a social media site (no worries, me either). Have you moderated / admined social media before?

What's your database going to be? What's the schema? Why? What endpoints will you need? What is the API contract? What is your versioning scheme for your API contract? What admin tools do you intend to create? How are they secured? How do you store passwords? How does a user reset their own password? How do you prevent hacking attempts?& How do you handle media? How do you handle gdpr requests? How will you handle blocking? How will you prevent CSAM? How will you handle DDOS attacks?

If you haven't thought about every single one of those questions and more, you're not ready to build this. Good luck, mate.