Brings back memories.
As above, find yourself a lidl and buy literally any wine and it we be of at least the standard of the mainstream usual suspects back in the UK. When we we’re there we went super cheap with the intention of using it to make sangria with back at the villa, but on tasting it it was perfectly serviceable red wine and had cost, with the exchnge rate, virtually nothing.
Every off licence in the whole of the Algarve has a life sized carboard cut out of Cliff Richard in it, smiling at you, presumably telling you in Portuguese to drink more wine. I later learned that he owns vineyards out there, but at the time that was a bit of a drunken mind blown moment.
Then there is Vinho Verde, super light and fresh, I think that is like the Portuguese equivalent to drinking Rose, it’s brilliant. Again cheap, and weaker, so at a meal you would always go for that dangerous second bottle.