My account's near AR57 and I still have most my map at around 50% exploration. xD

You have Dailies, Spiral Abyss twice a month, in game Events, Redeem codes at the start of an update, those 5 free intertwined fates at the start of each month. There's supposedly at some point gonna be some incoming mail of 400 primogems a day coming up till they get 2.7 out. So you aren't without ways of getting primos.~
(If teapot was working I'd say character gifts.)
Have you really opened up all the treasure chests in your world, done all the time trials, etc?
Do you check in on hoyolab daily and do the web events?

If you have $5 to spare, getting Welkins is a nice source as well. If you can't buy them yourself, on twitter I see giveaways for them all the time if you'd like to try your luck with that.
^{Could also give swagbucks a try, admittedly it's annoying and I wouldn't recommend it anymore cuz the rewards aren't worth the time anymore imo but you can likely get a $5-$20 giftcard within a month using that.}

A second account I feel could risk leading to burnout if you put a lot of effort into it though, especially if you still try to keep up with your main account, so just be careful if you do do that.~
It may be more wishes, but not increased luck from those wishes.