You need a sprint specific coach. Most coaches and clubs you’ll find start at middle distance and go up in distances they train. While you’ll learn basic drills

You need a sprint specific coach. Most coaches and clubs you’ll find start at middle distance and go up in distances they train. While you’ll learn basic drills that sprinters also do, the details, cues, form etc will be different, and the training program will be very different. It will involve a lot more plyometrics, more drills, and shorter distances. So you’ll see improvements if you’ve never run before training for mid distance+, but to eke out maximal sprint performance from form, you’ll plateau and also have poor sprinting mechanics. Also, I see some advice about lifting weights. Great adjunct to sprinting, but you need to learn proper sprint mechanics and training to see carryover (see: the number of big number lifters who can’t sprint worth crap v. 14 y/os who can dust them and have never seen a weight but have trained formally).