So I just got Conan Exiles for free through PS Plus and I soon discovered the inconvenience of not having multiple save slots and it seemed people were too hesitant to test out possible solutions. And I didn’t want to make another PSN account, seemed too much of a hassle and my solution allows you stay on 1 account and alternate between the saves. I tried to reply this solution on this topic, but they’re all closed-hence this post.
No PS Plus is required to have multiple saves, it only adds convenience and an additional save. Up to 2 USB sticks (PS4 has 2 USB ports) if you have a multiple USB port you can totally use that to increase the number of saves you can have (that will be 1 save for 1 USB stick). I personally need 2 saves, so what I do is use 1 USB stick and PS Plus online storage.
SIDE NOTE: If you make any progress on a specific save, you need to remember where each of your games are saved and upload the save in the designated storage location, otherwise you’ll lose precious progress if you accidentally overwrite another save.