Anon, how do i approach this geometry so it would be right?

You should aim for quads, which means polygons with 4 sides.

That said of you can get away with n-gons but you shouldn't aim for them. Like i can tell just by looking at that, you'll probably run into pinching if you subdivide that mesh.

If you are looking how to make that right in the sense that you are trying to reduce edges, google how to terminate edge loops.

>>566108
Will google. Thx for the info.

>>566108
>That said of you can get away with n-gons...

true, but not concave n-gons which is what OP has! I hate those.

>>566079
Literally two circles connected to eachother.