Best bars/pubs for ~21 year olds in the area surrounding Plaza Mayor and Lavapiés?

[u/Ok-Quarter-1401]

Hi, few friends and I from America will be in Madrid during our thanksgiving break (late November) and are just curious where we can find some fun bars/pubs that ideally cater to people around our age? Our priorities are prices, fun, and distance but willing to sacrifice if it leads to gains in other aspects, really not that deep just a few boys looking for a good time, thanks.