Is there something wrong with my internet or is it the place I live?

[Carlos]

My internet has been acting up multiple times and I changed routers 3 times.i have comcast internet. And I have the router they gave my have my dad when he started paying for the internet. I change the channel from 1 to 6 or 11 and that didn't help. I'm starting to think that it's not my internet but it's the place I live. I don't have many people using the internet and I have 20mbps so I think that's quite enough to have fast internet. And I'm also starting to think it's the router's model maybe it can't handle the internet. I don't know much about the internet but can someone please explain to me what's wrong