Hello @AiBoleche let me share a few videos I found on the matter hopefully those will point you in the right direction.
- Checkpoint Respawn video this video deals with creation a checkpoint respawn system in Unreal Engine 5. It is for 3d projects but the basis of the blueprints should still work for what you are looking for.
- Checkpoint System 2D this video is for a checkpoint system on a 2d style game, although it is for Unreal Engine 4 so some options may be deprecated or on a different location.
I hope those help and best of luck with your game!