what plan do i need for an smp that will get 60+ players peak daily and avg 35+ players

[paper bramble]

its 1.21 and has economoy, shop, factions, worldedit, coreprotect, and skript

has only 8gb ram rn and crashes 2-3x daily

[glossy monolith]

it depends on what types of plugins you have and what players are doing with them