Have you tried tegaderm?

I actually use a panty liner and I attach a gauze pad to part of it most of the time. The other portion gets attached to my clothing. That way the gauze will not come off.

If that doesn’t work try a brand call medipore tape or fabric tape... I got a roll from work and they both stick with my gf under arms and thighs

Hidrawear

Is it under your arm? I would use gauze and an ace Bandage to hold it there. Have someone help you wrap it. I use this technique on hard to reach places. Also Tagaderm bandages on Amazon work. They are surgical. You can use gauze with them too and they are waterproof. Keep that open one protected from infection. Then you’ll be on antibiotics - we don’t want that.