I never saw a fly like this, sand-, horse-, stable- and fruit flies yes. It seems this one isn't a real plague especially not if you are clean and take their sources to breed away".

I found a site with solutions:

https://www.thespruce.com/getting-rid-of-drain-flies-2656670

I like some of your photos not because of the fussy body but the silver wings.

Right now wehardly have flies or insects thanks to the winter. As soon as Spring starts they all pop out of wherever they hide.

♥️🍀