The only app I can't live without. Except for gboard, all of my applications are Foss. There is no competition for gboard's swipe typing, not to mention its many capabilities like as searching for gifs, stickers, being able to paste copied images, translating, and so on. I'd like to know how I can use gboard while maintaining my privacy. According to what I've heard, it sends all typing data to Google's server. If you ask me, that's a massive no-no. Do you have any suggestions?
On my old phone i used Florisboard, it was pretty good and it's FOSS as well.
These days I use the samsung keyboard as I recently switched to a samsung device. The keyboard customizations are really awesome, if you have KeysCafe module installed.
Not sure how privacy friendly it is tho.