Threads seems ok so far and has lot of potential but you need to put in work.
FB just local groups will give you best views just need thick skin as your finely crafted landscape photo you got up at 3am and traveled a couple hours to the location will get 1000's of views less then a blurry sunset/rainbow/snow photo from a phone.
Flickr eh mostly just use to to get my name in search engines.
My own website
Reddit group local to my area is not bad.
I mostly use UWA in city shots but I do use it in landscape too. I'll normally test out different focal lengths and lenses and see what the landscape will look like and then decided what focal length to shoot at.
This was 18mm in FF equivalence if you must. Panny 8-18mm m43
I had a couple photos used in some US Gov environmental study PDF's I found listed online. I release the online versions of my photos licensed under Creative Commons BY-SA-NC. The photos were from Canada but they used them and fully credited me and even left the watermark on the photo.
I used 6400-12800 in night clubs all the time with my A7s and Gh5s for shooting no flash sessions.
The cool things about shooting flash free is getting the party atmosphere, when people see the photos no one really cares if they have tons of detail, they just want to remember what it was like. Here's some examples https://flickr.com/photos/arekeych/albums/72157690179117962
10-20% to show off to others from the esssion and maybe 2% to keep for portfolio also it means nothing to others around the world if you think the 1-2% keepers are good as they'll like your other ones better lol
Good luck at $30/hr most dealers here (BC) have ads for $17/hr for lot photographer and video monkeys these are full time jobs. Highest paid I saw was $24/hr at an RV dealer in Lake Country.