I'm playing a warlock in our DnD 5e campaign. Near as I can tell, this is sort of specific to warlocks because they have so few spells known (correct me if I am wrong). Either way, I still have a problem.
Every level, I learn 1 additional spell. Soon, it will be one every two levels. I want to pick spells that make sense with my character, but I also don't want to waste a known spell on something that might not be so useful. Contact Other Plane is pretty great for my character, but not so great in combat. I'm worried I will fall off, especially since warlocks are built as burst-damage dealers, and that's my combat role in the party.
I was curious if anyone had any experience with this problem and how they dealt with it. I am also wondering if this is not just a "problem" with our campaign's style of play, which is more combat focused than RP. I am not convinced that this is a personal problem. I would be willing to bet my DM could help, so answers regarding either are fine.
So, how can I balance getting RP spells without losing out on more practical combat spells?