You need to develop as soon as you can, so follow opening principles and don't waste time in the opening. If he gets the opportunity to triple attack your f pawn you must have done some unnecessary moves.
Check this out, I 've written an article on how to survive the opening:
https://www.chess.com/blog/nklristic/surviving-the-opening-first-steps-to-chess-improvement
If you want to, give me the example of game like you're describing and I will try to tell you what went wrong.
If you need a general guide on how to improve, read this article if you have the time:
https://www.chess.com/blog/nklristic/the-beginners-tale-first-steps-to-chess-improvement
I keep getting teamed up on my F2/C2 square and it ruins my development

But...I’m also playing against 1000 and lower level players. Anyone higher up the ladder would probably be able to pull off an easy mate on me in that situation.
So my question is, when an opponent attempts to double or triple team on that weak pawn square, how do I stop that attack while also developing my pieces properly?
You can check some of my recent games for specific examples on what I’m talking about. It keeps happening and it’s very annoying. It throws all my plans out the window.