fungus gnats? Help

I’m at my limit. They are everywhere in my apartment. I keep my place extremely clean. Dishes washed immediately, trash taken out everyday, sweep, everything. I have a 7 month old baby whose room stays spotless. Food eaten in kitchen, diapers thrown away in bags.

It’s to the point where these vile creatures are in every room, kitchen, bathtub, crawling on the walls and floors, dead on floor. EVEN CRAWLING ON ME AND MY CHILD.

How the actual hell do I get rid of them. I live in an apartment, second floor