Junior Dev about 18months in my current job and I've got a problem

Started to feel not wanting to code at work, despite working on a greenfield project thats critical and using new tech. I get a little defensive about PR's over stupid small things (PR was once rejected due to auto indentation "not to standard").

Talked with boss (who I get on well with and like) and thinks my problem is I've lost confidence coding. Trys to get more senior Dev to on side to help me out more.

Same senior Dev is really close with other junior on my team - pair on alot of stuff all the time, have lunch and spend free time together, and will work way past working hours just to try and finish something that day (even though it's not due that day).
(Probs working ~60h weeks, where as I'm ~42h and contracted for 37h. I'll work on if I need to but tries to have balance)

Senior and other junior tend to ignore tickets on the board, do the work and then when I pick it up they say "I did that last night". No docs, no PR for me to ask about how it was done (as they merged it themselves). (They have previously completely refactored my branch in the past overnight then not told me atall)

I'm not saying its favouritism here, but I'm not happy with the situation. I feel I can't ask questions as they are always together or they discuss the problem themselves and just give me the answer (not really acknowledging my points). I dont tend to ask for help from this senior Dev now as I don't feel it's worthwhile learning wise for me.

Other people in the team are great but working on other aspects so not a direct one-to-one alignment (others are DB Dev & principal senior dev)

Furthermore I'm wanting to possibly work on full stack web or more architecture stuff, both which are not in my current teams remit (backend up to API).

So - what do I do? Try and remedy the situation in the current team as best as or look for a new teams as cut my losses.

I'm torn between the 2 and I'm unsure how to get out this rut. I feel I need to find a solution to this soon though

(Sorry for the long rant folks)