So I've got this Monstera plant thats been with us for a while but recently got attacked by these tiny tiny black insects that keep eating the leaves. I've actively tried to get rid of them as well as screening this plant away from the rest, but the insects seem to always come back. I've just read that it's possible to spray the plant gently with soappy water to help get rid of them, so I've just tried that - hoping to see better results. The uther leaves are more or less OK, but have some damage too. But what do I do with this leaf that's basically half gone? Does one cut of just the leaf part? The whole stem? What's the best thing to do in this scenario?

Appreciate any pointers 💚