Has anyone used Fllixbus transportation? I am thinking of booking it from Lisbon to Algarve as their schedules are better suited to my needs than the train system. I am concerned about their dependability, late trains or no show, lost luggage. Are there any tips to know if I decide to use them?
Here's a recent post. I've used them in Portugal, no issues.
https://community.ricksteves.com/travel-forum/general-europe/flixbus-experiences
Also look at https://rede-expressos.pt/en
They are original bus carrier, they have buses to more destinations than Flixbus.
We used the bus occasionally but prefer the train for comfort.