Bourgeois democracy is incapable of substantially opposing capitalism, the capitalists will just pull a capital strike and hire thugs and PR people etc etc. Countries that voted in socialists found themselves, and particularly their left parties, under terrorist attacks and faced coups. Some outright banned anticapitalist parties. If you do not organize and arm yourselves, you will simply get murdered en masse.

But if alternative voting systems inspire you, I do encourage you to get involved IRL in organizing efforts. This will teach you a subset of organizing skills that are more widely applicable. You will get to see the patterns of your opponents, too. Of our opponents.

But I also recommend reading widely and critically, to challenge yourself with the material histories of left organizing and, even more importantly, its failures. Who fought us. Who won. What is GLADIO. Who is Suharto. What happened to Allende and why. What happened to the pan-Africanists, the pan-Arabs. Why is the US left so anemic? Why are the European "communist" parties so liberal? Etc etc.