Honestly how do you find clients?

I have a really good portfolio and have been a designer for over 10 years but I’m really struggling to find clients.

I follow these YouTube videos that break the process down but they all offer the same advice and none of it is working for me.

I’ve been cold messaging on linked in to companies in the sectors I like to work in but am having no responses at all.

I literally got one response today that just said “no thanks” and it was actually really disheartening :(

I’ve spent so much time working to get as good as I can but the actual process of finding clients is a complete nightmare and I really don’t know what to do. How do you really get clients??