Glitch FPS drop to 14 frame per second.

Always happened in scouting camp game. It's happening for 3 month already. Please help. My phone are mid range POCO X6 PRO which can be very good even for high end game graphic. My max fps is 120. Frustrating in the game it's glitchy and drop the fps to 14-20 only. It's not happen often but it's annoying when it's happen.