Taking part in hobbies in a group environment is a really good way! Also don’t worry yourself too much about embarrassing yourself, we all say and do silly things. As long as you’re being kind I’m sure there will be nothing to be embarrassed about!

Try to find common interests with people. It's a basic advice, but it works. E.g. you can take some courses if you have hobby.
I do meet many neighbors walking my dogs btw ;)

I had the same problem when I was younger. There's nothing wrong of being a little shy! Try to say hello to your neighbors or coworkers to start.

you recieved some good advices already, but i would also recommend something from my background - volunteering. it has been such a great way to meet nice people. some of them are my best friends nowadays 😇

Thanks a lot for your recommendations! I feel much better now, haha. I'll try some of them, I promise :))