If your goal is airlines I'd just go 121 as soon as you can, so you can get your seniority number in. The regional I am at is hiring 300 pilots a month, that's 300 pilots a month above you that you can never change. Unless you have some other major red flags on your resume, I doubt they care you've been changing jobs often, especially since we all know covid was tough on our industry.
Once you are at a regional you can show them you are not changing jobs all the time by staying a couple of years.