Dude just make up a bunch of companies and your friends are the owners/managers. I did that shit a lot when I was younger and when I had no "experience " for certain jobs. I also had a few that were businesses I started. But instead of saying that (employer's really hate you once owning your own business) I would just put it on my resume like I was employee for said company. And the reason I left "company retired"

Resumes are bullshit ans easy to fake. What matters is your referrals. The main problem today is getting past fucking the AI filters.