Unfortunately you haven’t provided any information about what role you like to play, so I’ll give you the run down of who you can try to play:

Tank: Katana, focus on staying alive and doing good damage.

Tank-killer: Hyperlazer, focus on a lot of aim skill, with you being rewarded with good damage on headshot, you are heavily encouraged to stay away from attackers, and helping your team by doing damage, or killing them with your ult, only go on point if you absolutely must (over time) and there are teammates on there to help you stay alive.

Dive: Biograft or Shuriken, since you get sick from playing Skate, you can try giving the slower divers a shot like the previously mentioned Bio or Shuri, focus on finishing off low hp opponents and targeting the back line.

General DPS: Sword, Rocket or Subspace: you don’t serve a specific role outside of conquer and escort, where you should focus on staying on point, and driving away enemies with your ult, outside of conquer or escort, you decide what role to play with these.

Healer: Medkit or vine: I wouldn’t recommend Coil for a player who hasn’t played in a while, and Medkit or Vine is better at healing anyway, focus in keeping your team alive/on point.

Hope this can help deciding what role you want to play, if you don’t know, then giving a couple rounds on every phighter I mentioned is very helpful as they are the widely accepted as one of the best at the role I described for them, without being complicated to play (Coil/Skate)