i have a ryzen 5 5600 what do i upgrade to?

so i have been wondering for a long time what i should upgrade to, now i have a radeon rx 6700 XT and in every game i play it is low % but the cpu is almost on life support, i play rust a really performance heavy game and i keep havin fram drops cause of the cpu usage and i also love to stream, so i need a stable cpu that also doesnt break the budget as a canadian any ideas?