Razor burn & Ingrown hair

I have tried everything under the sun to prevent and treat razor burn and ingrown hairs. I am at a loss and feel like Im going insane with it now. I use new razors, I've tried shaving every direction, cold water after, witch hazel, lotion, vaseline, retinal cream, everything. I don't know what to try anymore but I'm really frustrated.

I don't really want to get a wax done either but I am willing if nothing else works.

Any suggestions on what I can try? Over or under the counter? I see my doctor on Friday so I can mention creams or such that she could prescribe. I have very sensitive skin so I understand why I get razor burn but it's such a self esteem issue.

TIA!