Please tell me, kind people, how to get from Durrës to Saranda?
You can take a shuttle (but it may happen that there won't be a bus, that's normal for them)
https://maps.app.goo.gl/sAbxdgos5kZfRfwU9
Based on experience, I would say it's better to go to Tirana and take a bus from there.
By taxi for 200 euros.