Your Total Daily Thermal Exchange at moderate exercise is ~2500 calories
https://tdeecalculator.net/result.ph...1.55&bf=15&f=1
go there to calculate your TDEE. You need to eat 500-700 calories more than you burn to gain about a pound of muscle/weeight per week.. ideally consume more fish or chicken to boost those calories.. but Carbs are very necessary too.. basically, you are not eating enough
Those calculators are great, and pretty accurate too. Your appetite will grow the more you eat. Eventually it iwll take more food for you to feel full
i'm 5'10" 235lbs and need to eat 4000 calories just not to lose weight..
If you wanna gain weight you should probably get that up to 3200 calories or so