Hello everyone! Thank you to those who provided me tips before! I started to water less and I also used mosquito dunks to get the gnats away. They are totally gone now. I also transferred my lemon plant into a smaller pot, changed the soil to a citrus and cactus one so it has better drainage, and cut off some of the brown tips. Unfortunately the plant still isn’t growing. After it lost most of its leaves, it hasn’t grown any more of them back and it’s been the same height for a long time. I’m not sure what to do anymore.