post-processing – Photoshop messes up my colors!

No idea how the color profiles work, usually I do not import random images In Photoshop, I checked the colors, used the RGB monitor and used, in my opinion, the sRGB- {random letters string} profile complicated when exporting individual images.

On my Windows Photo Viewer, the colors are skewed, but like a THUMBNAIL icon in a Windows folder, the colors are exactly the same as in Photoshop, and moreover, they look great when they're dropped in a folder. Web browser. BUT THEN, when I re-file the recently exported png file in Photoshop, the colors are busted.

My problem is that when I group these images into a single file, they will not be the right color when another computer will open them in a standard software program.