So this is why I began review bombing Dragons Dogma 2. I was doing a quest with an extremely unclear objective and I thought maybe killing a certain snarky NPC would progress it. So I carefully saved before attacking the npc. Killing the npc didn't work so I tried to reload my file, only to find the game autosaved the second I killed the npc. The game only allows two saves, one you kinda control that gets autosaved over A LOT, and one from when you last rested in an inn. Resting at an inn is somewhat expensive and just worse than camping overall, so I hadn't used an inn within the last 8 hours of play.
I distinctly got the vibe that it was designed that way on purpose. You can revive NPCs, but the item to do so is rare and limited unless you pay real money. A lot of the quests seem designed to encourage mistakes that will make you consider giving them more money in order to fix. Its like an MBA came by at the end and editted everything in game to make it as sleazy as possible. The saddest part is that if they took that aspect away and added some small bug fixes, it would legitimately be a 10/10 game.
When loading the game you only get to choose between your last save which is constantly autosaved over and the autosave it takes when you use an inn. Using an inn is expensive and inferior to camping which gives major buffs and costs nothing. So basically you have to spend a decent portion of your game currency as the only way to have a reliable save point the game won't randomly overwrite.
Only one character per account too so don't even think about experimenting. Unless of course you don't mind paying real money to stock up on items that undo the consequences of experimenting.