It helps to “get in the corridor” for things you want.
Like to use a silly example, if I wanted to own a circus, something I’ve never considered in my life before this moment, I’d get in the corridor by (for example) finding a blog or outlet whereby I could interview people who are involved with circuses, and by that one act have vastly increased my “contacts within the circus world” level.
And I’d research the history, and immerse myself in all things to do with the practical side, then look for any opening to that world. Driver, tent salesman, physiotherapist for acrobats, I’d find whatever was closest to my current skillset, and use that as the wedge.
That may all sound very 1950’s “get your foot in the door and work your way up” but I can tell you it works, if you show initiative and get in people’s faces (in a good way) and be friendly and helpful, you WILL be offered opportunities.
So find out what you want to do (or what’s available to you right now as a stepping stone) and find a way to get in the corridor for that.
Also do the LoA stuff, dress like someone with the job you want, though not better (never outshine your would-be future boss), visualise having the jobs you want, study a bit about the businesses open to you, and so on.
If the best opening available is pushing supermarket shopping carts from the car park back to the shop, you could be working out to get stronger, and planning to do some cute social media thing about helping customers, so you get noticed by the boss. Success in one field is transferable to any other if you have the right attitude.
Find the hustle within yourself, and be willing to go the extra mile, always treat people with respect, and try to be a person others are glad they know, those things will help with landing any job and getting rapid advancement. Part of getting in the corridor is physical presence as well, so see how you can accomplish that.