Been using a degoogled LineageOS phone with all apps being exclusively FLOSS. My favourite free alternatives to proprietary apps and services must be Lemmy (Jerboa) for Reddit, ArcaneChat and Matrix (Extera) for Telegram, Fluxer for Discord.
Which ones are your favourite?
Finally got around to installing it. Did the initial setup and I’m absolutely amazed! So much customization. I really like it. Way more powerful than Fennec which I usually use.