Telegram's backend is proprietary software and they (very similarly to Discord for example) can just decide to read your chats whenever they want. It's even worse then WhatsApp in this sense (at least as long as you trust Facebook that they actually encrypt your chats, again, there is no way to know if it's proprietary software).

Just stop using the spyware ones?

I'd just just use youtube-dl honestly

SearXNG, self-hosted auf meinem home server. Ich muss somit niemandem vertrauen, dass der angebliche Datenschutz auch eingehalten wird (was sowieso ein Witz ist, wenn es sich nicht um FOSS handelt).