I used to get beet red sometimes in the face when I was your age. So I wonder if it's more likely to happen at that age. But even lean into it. It can look healthy. It's also normal. Someone told me that you're better looking than you think. Usually at those ages people are self conscious and pick themselves apart, but then years later you look back at a photo or video of yourself and you think wow I was actually much better looking than I realized. So just something to keep in mind. Red on the face isn't going to change your natural looks. It could even look charming or cute. Maybe having a bit of that approach, so getting your mind off it, it might even happen less.
Stay hydrated. Keep cool or cold water with you. https://www.healthline.com/health/how-to-stop-blushing#how-to-stop
I've been having this problem all my life! I've had really rosy cheeks all the time. A couple of people have it in my family as well. I feel humiliated when people point them out to me. It's so embarrassing being the guy with the rosy red cheeks.
Is your worry that others kind of have a window into your soul because you blush? I can understand that aspect of it. It tells people you are feeling something that maybe you really don't want them to know. Believe it or not, there is a condition that involves this involuntary blushing, flushing that is more than what all of us do. Social phobia and anxiety certainly are going to make you more prone to blushing. CBT therapy can really help work through the mental health piece of this. Therapy can be a great thing. Here's info on when this becomes a disorder. When it greatly impacts you is the usual crossing point to that. https://www.healthline.com/health/idiopathic-craniofacial-erythema