I moved to Seattle from the east coast about a year ago. I'm heading back because I don't fit in here. It's me, not the city.
I spent a lot of time working remotely. Bouncing up and down the northeastern corridor. I found a way to get acclimated to a city rather quickly. Find your tribe, friend the service staff, and it generally grows from there. Make yourself that you're a regular, and a good person.
I'm not an outdoorsy person, I'm not a "chill" person. What I enjoy wasn't common fare. That's not meant as a knock. The closest I found here, was the LGBTQ community. But there was a bit of trepidation with me being a software developer, i.e. causing problems for the city.
There is the Seattle freeze. But it's also we're busy and there is not that much in common. It's important to try and not be negative. Blaming the city is not beneficial. Maybe the city just isn't right for you. What do you want from your city, where you live?
I will say I did find it's more insular. My usual fare of trying to join a conversation at a bar didn't work. Saying hi, was not well received. I also think I had a cloud of negativity, from heavy job dissatisfaction that limited a positive response. My few friends here. Were gained from bartenders a bouncer, and someone I met at a mixer.
One other thing I'd note. Is I try and perform outside of work, event hosting, dj'ing, etc. I tried talking to promoters but got stood up a lot. Make an appointment to meet up and no show.