I have some abs definition but it's like i can only see it in good lighting so how to get visible Abs fast

i had learnt the frog stand at first when I started calisthenics and now I got pretty good at it now should I train for the crow pose or should I juz ignore it even if I learn the crow pose what benifits will i get

This is my pushup video if I have any mistakes pls inform me also one problem is that whenever I complete my workout only one part of my chest feels pumped while other isnt what should I do

Really wanna learn the handstand but can't do the pike pushup need some tips to unlock it

I got sick a while back and lost a lot of strength and muscle. I was wondering if anyone could tell me how to regain it