Ubuntu 16.04 won't connect to wi-fi, what could be the problem?

Question

Computer networks

I’ve already googled everything 10 times and still something is wrong, please help
At home the Internet is via wire and I constantly have to change the Mac address by changing auto lo to enp3s0 in the /etc/network/interfaces file, but if you leave it like that, then it doesn’t see wi-fi at all, but if it’s the default, then it doesn’t connect to wi-fi, and if it does, it doesn’t
load it at all