EDIT: Disregard 2, it’s the ability checks that are impacted, not saves. I didn’t notice I’d misread due to getting abnormally lucky during enemy saves and not noticing the difference. Being that it’s just ability checks impacted, IMO you should be targeting enemy shoves and jumping instead.

Some tricks I used early game:

1. Keep an eye out for alcohol and oil barrels. A surprising number of fights break out near them, and a ranged breaking shot for the barrel, and following up with a Fire Bolt to the puddle…

2. If you’re running a warlock, don’t forget, Hex isn’t only for you. Yes, you do extra damage with melee/ranged/cantrips/et cetera while Hex is active, BUT, you also put a stat-save disadvantage on that enemy too.
   Multiple spells allow specific-ability saves to their targets, and lower or negate effects if the target passes them. Those spells are often power-checked by said save… and they become STUPIDLY powerful if a creature suddenly can’t pass that saving throw.
   This effect impacts several spells from attack cantrips on up. Be sure to know the spells the rest of the team is slinging, and choose the appropriate save disadvantage to give your opponent a very bad day.

3. Try to have enemies commit to coming at you through choke points, and if they do… having some of your guys work together to drop restraining/difficult terrain AOE spells (Entangle, Grease, Web) plus continuous damage AOE spells (Cloud of Daggers, Cloudkill, Wall of Fire) into said choke point equals a blender of doom for the bad guys.