It’s difficult to be sure and there is nothing you as an individual can do that will have a meaningful impact on the future of the world. Having said that, there are tons of things you can do to impact your future. The key is to try and anticipate what the world might be like in the future and try to adapt to it before you’re forced to.

Fascists taking over is bad news especially if you don’t happen to be a white cishet man. If you are, congratulations you’ll be fine as long as you keep your opinions to yourself. If not you’ve got to plan accordingly. If you’re in an out group of the fascists you’ll want to find community for mutual aid and defense, which you can either try to start if you are a land owner or join if you’re a peasant. Your day to day life won’t change all that much under fascism outside of the minority persecution. Prices will be higher, supply will be more spotty, but the life you have now will still be possible. Unless you’re like a drag performer, trans, or an immigrant.

Climate change is not going to topple civilization. It will fundamentally change society and lead to civil unrest but countries and oligarchs will still hold power. What you can expect are progressively escalating natural disasters such as hurricanes, wild fires, droughts, etc. These will strain disaster relief efforts and eventually hit a point where those organizations are disbanded or go bankrupt leaving victims of new disasters financially destroyed and homeless. The biggest disruption to daily life, outside regions where disasters are more likely, would be disruptions to the supply chain. Scarcity and rising prices will make day to day life more difficult, but like the fascists, the significant change to most people’s lives will be affordability that may or may not lead to starvation and homelessness.

You don’t have to wait for the white nationalists to deny aid to a predominantly non-white area to start prepping though. Hording stuff isn’t really going to help you because eventually they run out or the guy next door who horded bullets instead of beans will come and take them. You’re best bet is to try and adapt now to doing with less that way in the future when others are struggling to get accustomed to scarcity, you can help.