Danke, sieht am PC einleuchtend aus. Ich schätze dann mal, dass es einfach in Mlem recht schwer zu finden ist. Dann müsste ich da mal speziell in der Community fragen.
I found freetube helpful. You can subscribe to Channels directly in freetube. I am a bit unsure if it stops the algorythm completely.
I have a Withings Watch for some years now. I think it is french. It is a Good Watch with smart functions and a classic look .