I don’t have an instapot and don’t know anything about them, but the answer is almost certainly. Just dice your fruit and cook it… however long you cook things in an instapot? A search for an instapot mango chutney recipe says 10 minutes on high pressure. If I was cooking it in a sauce pan, I’d expect like twice that long, but I guess the pot is insta.

Fresh sauces (salsas, curries, etc) (as opposed to a fermented/pickled/preserved sauce) are just food you cook the same way as anything else, but chopped finer and maybe cooked longer.

Also I guess people don’t realize that you can cook fruit, but you can. Cut a pear into chunks and pan fry it some time.