On my 2020 RX the trip data is working, even without the phone being present i.e. when the tech takes the car for service.
I only use bluetooth to connect phone to car and that works every time.
Send to car works as does location data on the app.
The new car 3yr free subscription service ended last year and I was advised the costs to maintain the in-car hotspot wasn't worth it.
I did have 'mare when I first got the car (2yrs ago) and had to get support from Lexus.eu who finally sorted the communications after about 2 weeks. TBH they were good, keeping me informed almost daily.
IMHO the phone app is just a gimmick, doesn't really provide anything I find useful...