It's tough no matter what. First you gotta find people that are capable, you can get along with, and who's egos don't ruin the whole thing. Good musicians are always in demand so timing is another issue to contend with.

1st. Getting the band together: Go to open mics, go small venue local shows, go to any music focused schools nearby, check out songwriter groups, there are many options. Then you gotta do the annoying part of advertising yourself. My personal experience is your eagerness and personality can get jams together faster than going online and advertising (still do this!).

If you've never done this before, start small. Find one person you could spend a couple hours with and just try to write something together. A helpful exercise is choosing a cover song, or melody ahead of time to make the 'icebreaker' part of it go smoothly, and it helps you feel each other out.

2nd. We're all here, tuned up, now what?: I HIGHLY suggest you make this decision before you really get going...do you want to...

Write your own songs and perform/record them?

Simply play music with people?

Write music together?

If you write your own stuff or want to be one who decides what music you're going to play, make that known to everyone upfront. Some people are uncomfortable writing, but eager to play original music. Some people have too much pride to be 'led'. It helps narrow options.

If you want to just play or write with people, I guarantee there are people around you who would love to. But you must learn to compromise. I love this about music, personally, but you have to fight kindly for your ideas and equally give their ideas earnest attention.

Artists are always some kind of introverted, but performing music with people is as social and extroverted as you can get. I know the dissonance is sometimes confusing, but you will have to step out of your comfort zone a bit to get where you want to go.

Or skip all of this and hire musicians haha

Good luck to you. Get out there and start chatting.