Get motivated...to not be lonely so you get determined to find ways to fix it.
The longer you’re lonely the more you get sick of it until it motivates you to find a way. That’s what I meant. It’s pain and eventually you will seek pain relief.
In all cases we need to take actions ourselves, because nothing will change otherwise, but the actions we need to take will differ, and all of us appreciate compassion and understanding of our different circumstances.
Loneliness isn't fixed easily and it requires a lot of effort on your part to fix it. Until you hit the point that you're determined to fix it, it won't get fixed.
It's not a virus that just has to run its course. You have to purposefully have the resolve to change it and over time, being lonely for long enough will make you hit a point where you say "Enough is enough. I'm not going to spend my life lonely."
Step 1 might be hitting the gym or joining a workout group like F3 or cross fit. Looking for a club like Toastmasters to help make you more comfortable stepping out of your shell. Invite people to lunch.
Start following a sports team and find other people who do too to talk about it with and get together with to watch / attend the games. Hockey games are a blast in person once you figure out what's going on.
None of it is going to make a difference unless you, personally, are determined to fix it.