Hamstring, glutes injury from weighted squats.

Hey guys! I'm a 16 years old male! So here's the story, looking to keep it as short as possible! I've recently had this hamstring, glutes injuries around 3-4 months ago. It all started by me doing squats with the squatting machine in the gym. It was my first time doing it and with my stubborn head I've put as much weight on the machine as I could possibly lift. I didn't feel it then but the next day i could barely walk. Which was understandable but, in the folloing week it didn't get much better. And when i actually thought it was going to get better, it gradually got worse over time. Maybe because I started doing bodyweight exercises such as normal squats then few weeks later tuck jumps. I also recently started doing stretches for my legs. But it doesn't seem to help. I used to put oil on my leg (Oil that muay thai fighter use) and it didn't seem to help either. Then of course I stopped doing the squats and any sort of exercises for my legs. It's only my right hamstring that is affected and the right side of my glutes which is pretty weird. I really don't know what to do. Also, my leg isn't swollen or you couldn't really tell if you'd look at my leg that it's messed up. It's particularly sore when I do sit ups, for example, when i lock my feet under a bed and then try to do a sit up. It's also really sore when I try to touch my toes with straight legs and when I sit down, straighten my legs and try to touch my toes then. It's a little sore when I just walk too.