I have just gotten to lvl 5 in a campaign but I'm not 100% certain on my spell selection.

I have chosen Bane, Command, Hold Person, Hypnotic Pattern, Lightning Bolt, and Suggestion.

Hex and Disguise Self from hexblood race, Misty Step and Charm Person from fey touched.

A few options are from my homebrew subclass.

I like hypnotic pattern but i think you could find something better than lightning bolt, like fear fly or counterspell, id mention thunderstep or other defensive spells but i dont know what kind of warlock you are