I started using Duolingo in earnest right before the pandemic started.
Duolingo big streak
This week I hit my 1,000 day streak. Mostly Spanish, some German as well.
My opinion on Duolingo: better than doing nothing, but far from sufficient to become conversational. For that I need to practice more with other humans. I did this while in Mexico earlier this year, and try when the opportunity presents in our travels.