I know that to some LinkedIn is very important. But to me, I’ve managed completely fine. Been able to get work and have jobs without ever having a LinkedIn profile.
When I apply for a job, I provide CV, cover letter and a link to my GitHub profile.
Maybe some of the places I’ve applied to in the past have passed on me for not having a LinkedIn profile included. I wouldn’t know. No one ever said anything about it to me. But they may have filtered out my application for it. Regardless, I have been able to get work and get jobs.
That said, I've also never been directly asked for such a profile, if it was a field in a form I don't remember it being mandatory and I don't even remember when I made my LI account, or when I actually started to input more than my name...
If asked, I honestly said that I didn't want to associate myself with a site that made such heavy use of dark patterns and felt so very, very sketchy to use, and everyone respected that answer (at least to my face).
(I did have to create a LinkedIn account once, for the sake of a previous employer who wanted their small company to not look like it was just the founders who worked there, but I made it using the company email address and never updated it after creation, so I don't really count that as ME using LinkedIn, more my employer through me.)