Looking for lats, but all I got is fats

Hey all!

Bit of background, a few years ago I used to lift using conventional weights in the gym. 4x a week.

Had a horrific car crash which basically put an end to my ability to go to the gym for 2 years.

Then I lost all motivation to go back as I put on close to 80 lbs in those 2 years.

Anyway, cancelled my gym membership and I bought a pullup bar that Ive mounted to the exterior wall of my house, got some gym rings, perfect pushup handles, a bench, adjustable dumbells up to 40kg, a weighted vest.

Im currently 270 lbs of raw fat. 6'4" and I feel terrible about myself. My goal is to be able to do pullups lat and bicep variations. How can I work up to these as I feel so tremendously week rn.

If you got this far, I really appreciate you ❤️