Welcome to TE! You're doing better than my dad, who at age 10 fell off his bike and broke his wrist...and hasn't been anywhere near a bike since.
Have you bought the bike? Now, get yourself a helmet, and perhaps some gloves. If you want, lower the seat so you can get your feet on the ground while on the saddle, and just push yourself around that way so you can get used to balancing. Find a big empty grassy field and just try riding, I guess. Practice getting on and off the bike and riding around.
Relax. And smile. It's supposed to be fun.![]()