Linkedin used to be good(ish).

It's offering was: "Talking about my CV/resume and engaging with potential employers have to be so stiff, corpo and outdated. Why can't it be more casual and easy to do like a Facebook Bio but still usable? Also, business cards suck and get lost. Another thing, working in <insert industry> is demanding and going to networking events is awkward and too full on. I wish I could maintain connections and have occasional conversations with people and actually remember who they are"

This worked for a while. In 2012 to 2015 getting jobs entirely via recruiters and conversational interactions on LinkedIn often led to interviews and other things. Then they started needing to make money, so adverts became a thing, the premium became a thing, then marketing departments caught up and started aggressively promoting crap, then later influencers arrived, and now AI. It's a death by 1000 cuts, it's fundamentally made out of low-stakes dishonestly from people just trying to keep their career going. But the end state is that it's probably the most dishonest social media platform to date. When you have Instagram and Facebook to compare it to, that's quite an achievement.