btw i also have more tips.. you should do the melusine quest thats in fontaine its fun and it also gives primos.. you should also do hangout quest their not that long and it gives 60 primos each.. and i dont know if you did archon quest but archon quest gives you fates, i would also farm reputation to get treasure compass, that can also help, and oculis i would collect fontaines, inazuma and sumeru since each time you level up the statue you get 60 and maybe a key, and i would do the little domains that give 40 and it also gives you a chest that also gives 10 which is 50, and i would also do the adventures handbook it can give you some primos as well, you probably did some of these things but i just wanna help cause thats also helping me right now since i lost my 50/50 also if your farming for navia.. farm artifacts, books and her dewdrops but i wouldnt farm boss cause you never know if you could get her i also did the same with farming furina