Should I get a CompTIA or other certificate to gain more selfhosting knowledge?

I have been on this sub and playing around with selfhosting for almost two years now but I feel like I've barely scratched the surface.

I often feel inadequate when I see people on this sub discussing what I consider to be advanced networking terms and technologies, especially when discussing remote access.

Will getting a certification like Network+ help me feel more comfortable managing my homelab?

If not, can someone recommend any resources I should look into to get good at being my own sysadmin?