You need to post your swgoh.gg account so we can see your roster.
Generally, GW relies upon squads with a high degree of recovery built in - Geo's, nightsisters, phoenix, and the like.
For a bastilla / gmy squad you will need to look at a few skills. Gmy will be fast and hard to debuff because of bastilla lead. So you need a taunting tank to absorb the hits. Kru is good at this. I'm guessing you don't have GK. Kanan and old Ben work well too. You then need someone who can dispell and someone who can hit hard. Ezra can do both of these. If you have boba, he can dispell and hit harder when he does, so use execute on a buffer gmy.
Vader and palp get lots of speed v jedi.
Gmy is your focus, with jka second. Bas buffs will slow you down but if you go for her, Yoda will mow over you. Forget about mace and lumi to the end, they pose no danger
