I have these bumps around my neck and armpits, and I'm considering getting a treatment ahead of my summer vacation.

I'm really bothered by the fact that I've developed not just one or two, but several small bumps around my neck and armpits. I was wondering why they keep appearing, and I heard it's a sign of aging. I've heard that things like milia or skin tags appear as we get older, and I'm worried they might spread if I just leave them alone. Since it's summer vacation season, I'm concerned they'll be even more noticeable and unsightly when I go to the swimming pool, so I'm debating whether I should get a procedure done before then. I've heard online that even simple laser treatments or removal procedures can improve them quickly, but I'm curious if they are actually effective. I can't exercise because of the heat, and I'm neglecting my skincare, so is there any way to improve this, even if it's just a simple step, right before my summer vacation? If anyone has the same concerns, please share your experiences or advice.