Chafing probs ☹️

Okay ladies, these are pictures of my inner thighs after walking around in shorts in the Texas summer heat 😑 as you can see, I suffer from the dreaded "chub rub" or heat rash I guess because I get it under the girls and in my armpits as well😭 any tips and or tricks on how to make this look and feel better? Or, even better, how to avoid this problem COMPLETELY?😪Any and all advice is appreciated, and the phrase "TMI" is not in my vocabulary so don't be shy!🤗

Thank you in advance!🙌🏻