Ebikes will get you a good chunk of the way there in a lot of places. Other than that, if you live in a city then vote like hell and go to city council meeting as often as possible to demand bike lanes. Local voting actually matters and can change (some) things.
If you live in the country… Eh… Start sabotaging gas stations I guess? I don’t even know where to begin with a constructive answer. Rural folks are basically forced in to cars and there isn’t much to do about it without massive changes. In the Netherlands even small towns get train stations, but in the US and Canada and even a lot of Europe rural folks are just screwed.