Eat at the bar, not at a table
Bar counter culture in Granada is the most efficient entry point for a solo traveller. Sitting at a table invites the social awkwardness of eating alone in a formal setting; standing at the bar counter normalizes it entirely. You are positioned to see what other people are eating, to ask the bar staff what the tapa of the day is, and to start a conversation naturally. Los Diamantes on Calle Navas is deliberately designed as a counter bar — there are almost no tables. That crowd, standing at the counter with small plates of fried fish, includes both locals and tourists and is easier to enter than anywhere with assigned seating.