monstera deliciosa swiss cheese leaf problems

can someone help with my monstera deliciosa swizz cheese leaf problems please?

I,m thinking it may be the soil? I used general purpose soil with a bit of perlite for drainage its getting plenty of light though its 2-3m away from the large window,they been feed with plant food and it is fairly new soil so dont think its that, i,m finding a lot of my plants are not looking to well to be honest, is there maybe a general mix that drains better that might help them all, please dont get to tecky on me as I wont know what your talking about lol..thanks in advance. Al

there's a few leafs like this now and the soil says its still wet has been for ages

 

Well you could try not watering it
For a while at least, mine dries out pretty much between waterings.

If its recently been repotted dont feed it either, feeding is for well established plants that are growing strongly, or starved plants

Not sure what the leaf spots are though, or the cause I'm afraid unless they are where water has dripped onto the leaves, or feed.
Just stick with it and see how it goes, it might just sort itself out.

 

Is it in soil. I would have thought MPC. All my indoor plants are in it. I would never use soil indoors.