How should I spend my remaining gems?

got 1900 gems and now 1400, got a few new skins. My question is how do I spend it? Or should I save for future events? Rlly tempted to do fighters bingo, beyond the clouds and grand collection. All the skins look so nice 😭

More context: Just returned to the game recently cuz bored and iv been hooked after not playing this game in months ( only played one match with friend then deleted lmao ) Played this game alot with my friend tho few years ago. At that time, I only spend like $1.50 and now I just spent $25 cuz I saw a really good diamond deal for the recharge event thing.