I am using Linux M 21.3 and LO 7.3.7.2. My docs are stored on a separate integral HDD and LO on the main SSD drive. Neither writer nor calc will save docs. Both open existing docs as read only. (and I assume the other functions are the same)
I tried downloading LO 17.3.7 but it looked as if it would not pick up the existing settings so I did not continue. I spent ages setting up LO to my liking.