Poll- How can I gain weight & grow muscle on legs & grow booty? ?

I’m 23 & I have a week and half eating 2,000 calories. Last year I ate 700 calories was sick underweight due to anxiety making me choke on food. My body is first pic is too skinny no perky butt no thick arms, what home workouts I need do? What food I’m supposed eat to get thick arms and perky butt thick legs like the two girls in 2-3rd pics? I have only 5lb dumbbell & resistance band.

i only been doing squats with my dumbbell so far every other day & calf raises with my dumbbell. That’s it. gyms are closed.
Poll- How can I gain weight & grow muscle on legs & grow booty? ?
Not say I look fine as I look like 12year old. My jeans don’t fit. I’m not even 100 lbs. it’s like the fatty foods I eat gets sucked into my body.

Poll- How can I gain weight & grow muscle on legs & grow booty? ?
Poll- How can I gain weight & grow muscle on legs & grow booty? ?
Poll- How can I gain weight & grow muscle on legs & grow booty? ?
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