Q.Banyan Tree Dying
My banyan tree is filled with bugs and nothing seems to work. I’ve tried warm water and soap as well as various pesticides that would be compatible with this tree but they keep coming back with a vengeance. :(.

Certified GKH Gardening Expert
This looks a lot like bacterial leaf spot. It could, definitely, have been caused by spider mites. These are notoriously difficult to rid your plant of.
Here are some article that will help:
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
https://www.gardeningknowhow.com/garden-how-to/info/applying-bactericide-to-plants.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-treatment.htm

Thank you, I'll definitely try the Neem oil as nothing else has worked. Appreciate your time.