someone help !! does this happen to anyone else !!?

so i shave my armpits at most 3 times a week but typically 1 or 2. they’ll get itchy and so itchy to where i’ll scratch till they burn since it itches so bad. this is what they look like...

after shaving i put sensitive skin lotion on them. this has happened before but i’m just tired of it and wondering if anyone has answers