Hi, Latsok,
First, be aware that there is now an active Smartphone Photography Section where your question is more likely to get more informed responses.
My experience is having used the iPhone11ProMax and now the iPhone12ProMax is that the improvement is significant. Sensor (and pixel) size of the back cameras are 47% larger, so right off the bat the really impressive images became noticeably more so! And the combined effects of improved “computational photography” and ProRaw are impressive! Bottom line? I’m delighted that I “moved up”. I just got back an 18”x36” enlargement of a TIFF file from a raw exposure and discernible detail rendition and resolution is amazing!
Be sure to check out the new Smartphone Photography Section. You will find lots of tips and hints that will help to improve your enjoyment of cellphone photography!
Best regards,
Dave

This year I plan to purchase an e-bike. Some of the backroads here in PA have no shoulder and as I drive through the countryside I often see things I would like to photograph and simply can't because there is no place to pull over and park. On very very backroads where traffic is almost zero, I'll stop in the middle of the road as long as there are good sight lines in front and behind that would allow me to see oncoming vehicles, and shoot through my window. Other times there is light but steady traffic and it is not possible to stop even for thirty seconds. I think an e-bike makes sense to get some of these shots. I'm sure someone will suggest a regular bike but with a bad knee, it would only work on flat ground. The pressure of going up hills would not work. So far it looks like two bikes are well reviewed and are affordable: espin bikes and Hemiway bikes. They are both around 1500.00. The Hemiway has a more powerful 750 watt motor but weighs 72 lbs. The espin has a 500 watt motor and weighs less. Does anyone have experience with e-bikes? I would like to hear your experiences.
Thanks in advance for anyone who responds,
Mike