a life with no social media and phone, having more DIY, Punk, hacking style and stuff, how is that possible in current years? my ideas are having so low or no use of social media, using Linux or BSDS, having a custom rom at phone (or dumphone) and using alternative sites like image boards, IRC, old/niche forums, going to punk gigs and raves, learn music instrument, learn about cybersec, download music and movies, piracy in general, dress alt, make a personal webpage, using less javascript and using alternative's to crapitalism.
This is all cool and all but keep in mind that these are only just lifestyle choices at the end of the day and don't affect the system in the slightest.
You can try to leave a cheap life and avoid supporting monopolies etc, but only a massive organized movement can achieve real change. "Alternatives to capitalism" when referring to personal ways of living is only a matter of aesthetics, often used by opportunists to slow down the formation of a real and fierce social movement out in the streets.
If you want to fight for the end of capitalism, join an org and/or a union. Go to protests, join strikes, organize your co-workers etc. It's much easier said than done, but only collective real world action can move history forward.