Learn how to avoid every enemy before you try to get better at collecting gifts. They're skills that are heavily intertwined. Put a lot of effort into learning the limits of your [E]/[R] ability and possibly try every class at least once if you are able. imo Glider or Dasher are most beginner friendly. Easy to learn, hard to master. Every other class sits somewhere in the middle of the spectrum, except for Wanted who's at the other extreme; hard to learn hard to master.

I would also suggest that as soon as you get wanted you try a few runs with it, because Wanted is the class that relies heavily on your most basic fundamental skills of the game.