I need some super basic skincare advice!

Ok, my whole life skincare has been so confusing for me! I have never round a routine that worked. I know everyone’s skin is different, but all I’m trying to do is wash my face, wear a daily spf, and sometimes makeup and a waterproof sunscreen.

So my main questions are:

1)For those that wear a daily non waterproof sunscreen, do you double cleanse???

2)If you wear makeup, do you double cleanse??

3)How long do you have the cleanser on your face when you wash? I have heard everything from 10 seconds to 2 minutes.

Help please!