I use endurain since day one and it's growing fast and good. Dev is very dedicated and progress is significant and solid.
Said so, I always despised Strava and never used it. But I use Garmin platform since I own many garmin devices for run bike and more ... And after all these years Garmin stuff, also on software side, keeps being non enshittified
Sorry to say that most sport devices are not supported by gadget bridge