I can very much relate to your experience of theaters becoming corrupted by crummy programming and non-film advertisements as well as the audience being poorly "moderated" by the ushers. I have a very strong aversion to all of these things.
If the option is available to you, I'd like to recommend a medium-sized chain of theaters in the US called The Alamo Drafthouse. They're slowly expanding across the US and I find their approach refreshing:
Firstly, their business and programming exudes a real love for film and cinema that you only see in a superficial way at Regal Theaters or an equivalent. It's a good mix of big-studio releases, indie films (which they often make efforts to highlight and platform) and old films that are beloved or noteworthy. It's a very well-mixed bag. Quite often they host specially-themed showings or events that expand the traditional experience.
I'd say their big blind-spot is in not programming what I'd call "film school" films: Films that are extremely niche or academically interesting or avant-garde. I imagine it's hard to consistently pack a theater for a Pasolini retrospective or something from the Lumiére Brothers. That said my local branch (Los Angeles) features a replica video rental shop in the lobby that is EXTREMELY well-curated with DVDs that you can rent for free.
A quality that I find endearing from this franchise is that they play unique pre-roll footage while you wait for the lights to go down that is specifically curated for the movie that you're there to view. For thirty minutes prior to showtime they play everything and anything that is thematically related to the movie you're about to watch: Does the movie star Bryan Cranston? They'll play an old aspirin commercial that he acted in in the 90s. Are you seeing a Spiderman Movie? They'll play footage from the 1980s Turkish Spiderman movie where Spiderman wields a pistol and stabs people. It's all very good-natured and fun and infinitely more enjoyable than watching trashy word-scramble puzzles, or advertisements for a local dealership.
Finally, their biggest innovation is that the theaters have integrated the serving of food and drink (entire meals and alcohol) into the experience. Every audience member's reclining seat has a desk in front of it and a staff-member will quietly come in and take orders that you can write on a card. Now this may be a good thing or a bad thing to you, but what it also means is that each theater is moderated by a crew of 2-3 servers who regulate any disturbances or unwanted behavior. I've definitely pulled out my phone to text at one point and been told I need to do so out in the hall.
Anywho, whether you're able to attend The Drafthouse or not I hope you find a way to reconnect with the experience of seeing movies. It's something I greatly value and love to share with everyone.