The striker is adjustable. You just need the correct torx bit. If you need new striker bushings, they are sold at Autozone in the HELP aisle. They are $9 each, and come assembled. Simple remove the old striker and swap the new one in place and then align.
Door bushing are also sold at autozone. A little trickier to install. Open the door all the way and lift it up, If there is slop in the door, then replace the bushing.
Bushings and strikers are cheap. Prob $30 in parts total and you get get both doors nice and tight