Game ruined on PS5 by save game system

Saving a game works like no other system I've used and duplicating a game save cannot be relied on at all. I saved on Sylva before going to Desolo and I forgot something so I reloaded the save. This just loaded my current state on Desolo as the game seemed to overwrite it. I then tried to respawn back to the starting base at Desolo because I fell down a deep crater and it respawned me to Sylva, so no rocket etc as that is all on Desolo! I feel like I can't even play this game anymore...