@HauntedOwlbear I don't usually write guitar tabs but I used to use MuseScore for folk music scores. It has a guitar tablature function and it looks like it's Linux friendly. Not sure how easy to use it is. The thing I liked about it is you can "play" the score as you're writing, so you can hear if it's right or not (I don't really read music very well, so this was invaluable for me!).
Edit: Sorry, the link is here: https://musescore.org/en