u/yessirmartisme

Hello! I am a noob so bear with me. I have to pick a wifi provider and I’m between alta fiber and spectrum if anyone has any pros/cons. ANYWAY real reason is that I would have to pay extra money to “rent” the router. My question is can I not just buy one separate and if I could, what makes a good router? OR could I not run PFsense on my old pc and just have that be my router? I thought maybe you would need 2 NIC cards to make that work, but i am not sure. Let me know if anyone has any advice!