Small, skin colored, flat bumps from past pregnancy. What can I do to make skin on neck and chest more smooth? (Photos)

When I I was pregnant I got some skin tags but I also got a large amount of these small bumps on my chest and neck that are skin colored and more flat. My neck feels like braille and although it’s not too noticeable indoors, it’s noticeable in natural light. I have sensitive skin so I’d like to make my skin smoother but I also don’t want to get a procedure done that will leave any scarring or pigment issues and make it worse.