I started working out a few months ago but I can't seem to get my dips and pullups to progress. I can do a few dips, like 3-4, but then my shoulder starts to hurt real bad. Possibly bad form?

I can't do a single pullup. I have been trying to do egress pullups and assisted pullups, but I feel like I am making no progess on that at all. They are just as hard as when I first started.

I can tell my triceps are improving, as are my back muscles. My chest is super week because I figured out I had been doing bench and pushups incorrectly, so that is a work in progress. Not sure if the weak chest relates to the dips because my triceps are fairly strong, but then again I know very little about all of this since I am still new!

Do yall have any tips to help improve these?