Monstera Leaf Drooping. Monstera leaves drooping is a common issue right after you repot or transplant a plant. The pest that likes Monstera the best in my experience at least is thripsBut if you keep your thrips population under control check out this post for how I got rid of thrips on my Thai Constellation they dont usually cause leaf drop.
Other causes include overwatering low light fertilizer problems pests or transplant stress. The damaged leaf will go brown and fall off but new ones come out all the time. The plant has pests.
If your soil has gone too dry completely dry the oldest leaves will turn yellow first.
The plant has pests. The damaged leaf will go brown and fall off but new ones come out all the time. Both overwatering or underwatering could lead to droopy leaves. Then water properly and make sure that all the water drains.