If you’re trying to get fit and build muscle, eating more protein will help with that. 1.5-2g per kg is a pretty commonly recommended target for stimulating muscle growth. I’m not really smart on the specifics, but this power-nerd of a lifter is: https://www.strongerbyscience.com/athlete-protein-intake/

I’ll point out that if you don’t use it to build muscle, protein is also an energy source. You won’t shit it out, you’ll burn it or store it as fat.

Finally, there are plenty of good veggie sources of protein; I’m not advocating for eating more meat!