I’m not convinced that’s a yeast infection, simply because inside your vagina looks fine. Usually you would find a thick white substance inside as the yeast grows. I tear often when i have sex, so my advice is to moisturise the area regularly, as often as you would your face or hands, with unscented moisturiser such as e45, use actual lube if you feel like you need to use spit as a lubricant and avoid sex when you have tears. The dryness, angle and elasticity of the skin surrounding your vaginal opening is different for everybody, so I can’t say I’ve experienced peeling, but I have had yeast infections and that doesn’t resemble my experience, and I have also experienced vaginal fissures and know that they should be kept clean and left to heal whenever possible.