Begonia - you need to remove the lower row of leaves with pale petioles - and whatever I circled - seems like suckers to me. After that I would cover a plant with a dome, baggie whatever - and let it be. The suckering is a result of a stress cause by removal of many leaves. You just need to let it recover and stop stressing the plant.

Too mach TLC can be lethal.

But it will come back

Irina