I quite LinkedIn (and all social media), did not affect my freelancing practice at all.
I think LinkedIn has changed quite a bit the last couple of years, especially since covid hit.
I actually got (potential) clients with linkedin but I post regularly and always try to create some value in my posts. At the moment, it's my main marketing channel. This isn't ideal in the long run because it makes me highly dependent on the platform.
Regarding the feed, it just takes work to keep your feed clean. I only follow people who are actually related to my work or engage regularly with my content. People who post work anniversaries, selfies, and other junk will be removed after one or two occasions.
How do you get clients for your freelancing if I may ask?
LinkedIn was always a bust for me, waste of time. If I'm going to spend significant time promoting myself I'd rather do that on my own web site rather than feed a database for web scrapers.
Sometimes leads or customers ask for my LinkedIn or Facebook (or Twitter) ID so they can connect. When I tell them I don't use those or any social media the most common response I get is "I wish I didn't use those." Anecdotally I know a couple of people who tell me they got leads and customers from LinkedIn, but more people tell me it's a time suck.
I think a website and LinkedIn are complementary (or can be) but in the end it doesn't matter how you get client as long as you get them.
LinkedIn feels (somewhat) natural to me and I only post content in a specific niche and no selfies or other junk content. Got a couple of leads over time but it's also time consuming, especially when you just start out.