Suggest Daily calorie intake

So i've been on a deficit for a month or 2 now(i've lost count) i'm only doing half or 75% of my daily protein intake and 2000-2200 calorie a day.

I'm also doing 10-20k steps a day so i'm very active. But what i don't get is i'm stuck at 78-81KG for 3 months now, i'm always bouncing.

Idk what's the problem tbh

PS: i also go to the gym for 2-3 days a week.