@ButterflyEmpress
I think my biggest tip for coming up with a solution, be that be ending a relationship, or defeating a villain is to end as close to the climax as possible, and always to keep the characters personality in mind.
It's easy to want it to be something super dramatic, if it's a romance to make it end in a kiss etc, but try to think about how your characters would resolve an issue and what the most logical place for them to end would be. Are they automatically going to become super happy when the problem ends? Does the primary struggle ending solve all the emotional problems?
And as much as you can, imply the other problems getting resolved (or leave them unresolved) rather than spending too much time dwelling on them after the main problem is dealt with/over.
This is a short story technique, because you can't drag out the ending. You can have a bit of de-escalation, but you don't want a lot, and you also don't want to go out of your way to tie up all the loose ends, it can actually ruin the story.
For my first published story "Rain Dance" the story ends directly after the hurricane when the MC goes outside to see her families farm destroyed. There is no resolution, just a final thought and conclusion.