Fitness

This is an open ended question. How do you create continuity in how you visualize your fitness journey across devices/platforms?

For example, I have data from my Amazfit, Zepp, Google Fitness days, I currently use a Garmin 530 while cycling and a Fenix 6 Pro Solar for everything else. With Garmin+ hinting at bad things to come and the high prices of Garmin watches I'm considering a possible Polar or a Suunto next. How do you visualize your trends over time?

• do you feed your stats into a spreadsheet?
• Do you use a quantified self app like Exist that pulls data from multiple sources

Another concern of mine is winding up split between ecosystems like if I bought a Suunto watch and eventually replaced my Garmin Edge 530 with a Wahoo device.

I can't pretend that Garmin does this especially well, even when my current devices are all Garmin, but I know my watch measures recovery and readiness after the rides I do on my edge, so I'm never in the dark as to where I stand on my recovery. Using a device only for workouts seems like it would be problematic as fitness isn't just movement, but also how you eat, sleep, etc.