8 failed interviews so far. When do you stop and reassess vs just keep playing the numbers game?

I have been interviewing for Sr. DS (ML) roles and the process has been very demotivating. I have applied to about 130 roles and received callbacks from 8 of them, but all ended in rejection or the position being filled. I do not think a 6% callback rate is terrible, but the hardest part has been building any kind of interview muscle memory.

Each process seems completely different, with little standardization, so it is difficult to iteratively improve based on the previous interview. The only part where I feel I have improved is the hiring manager round, since that is the one step that has been somewhat consistent across companies.

At this point I am not sure what the best next step is. Should I keep applying while continuing to interview, or pause applications for a while and reassess my approach?