Tips on not giving up on plays?

New goalie here, playing in my first rec league. I’ve realized in practices and games, a lot of the goals I let in are from dekes or something cause I’ll follow the shooter in, but then as soon they shoot the opposite side of me, my body just kinda stops and freezes and I don’t try to reach out to get it or slide over to it or get to the puck even though my mind is telling me too. Is it poor reaction time and tracking? I wanna go to stick times to practice more but they’re literally at the most inconvenient time ever for me. Fridays at 4:45 when I don’t even get home from school until 4:30 and I can’t drive and don’t have any friends to take me cause they all work after school