I think I was bit by snap (Firefox refusing to start) - I just don't have the mental energy to learn what snap is and why I can't or shouldn't just use apt-get

I think I was bit by snap (Firefox refusing to start) - I just don't have the mental energy to learn what snap is and why I can't or shouldn't just use apt-get like I always have. Or do I have to use both now? (edit: if you want to quickly answer great, but I'm really putting my frustrations into words)