Inner Thigh Chafing Issues...

Hi,

I am currently have a few painful issues with my thighs rubbing together. I am 17 and carry a little excess weight (currently in the process of losing some...but it takes a while), I also do not do any form of hair removal above my knees. As shown in photo, I consequently have lost hair between my legs due to the rubbing. There has also been the recent formation of pimple like lumps (which could be ingrown hairs). I think I also have a few stretch marks.

My question is what are your solutions for inner thigh chafing/ rubbing? And what is the best thing to do with ingrown hairs? (using tweezers is quite painful)

Thank you for any advice you can give :-)