1. Fair, I actually generally prefer a more minimalist approach, though I've found some art makes my home more inviting to myself and to guests. I prefer local art I pick up at community events, though making it yourself would be cool af
2. Nah, most of my clothes come from a thrift store or swap meets. It's about understanding what looks good on you and aiming for that. Learning to alter your clothes would also help with this
3. There are non comsumptive things. Volunteer at food not bombs or a books to prisoners community. Get involved in your local leftist scene. Hit up a park you haven't recently. Go for a hike.
4. If you aren't happy with how you're living your life yes. If you like where your life is and are comfortable with that having been how you lived it, see my first paragraph of my previous comment and ask yourself why you care what advice some lady on the internet gives
5. No, you lesrn to speak to people and make friends whether you want you contribute to our great imperial society or tear it down. Staying in all day alone isn't a great act of rebellion it's neutral sad.

If you stay at home all day, alone with bare walls and clothes that don't express yourself or make you look good, never doing anything interesting or speaking to people, you finding friends and a partner as an adult are unlikely.