This is an easy upgrade for any home and can be done by a relatively competent DIYer or an HVAC contractor. The main point is that your attic is much hotter than anywhere in the house, so if you can get the attic close to outside ambient, it will help. I personally have my attic fans (one at either end of the house) set up on a separate thermostat from the rest of the house, where any time the attic temp exceeds 90F, the fans kick on.

Doing this will even make your AC system work better if you have one, since you won’t have the extremely hot air in your attic heating your ceilings