I am new to Yousician, and enjoy the lessons, but the software is very glitchy on my low-end Android tablet, a Samsung Galaxy Tab E Lite. It's gotten to the point where I don't play anymore. What kind of Android or Linux setup are you using that you like? What device, interface, amp? I use the Tab E with the built-in mic and an old Peavy guitar practice amp. I do not recommend it.
BTW my user name is Thai for "four strings". After every English user name I could think of was taken, I went with my second language.