There are a few "classics:"
- Caverns of Thracia
- Caves of Chaos
- Many more that I'm forgetting
Ten Foot Pole is one of the deepest repositories of reviews for OSR stuff (my own "Stjernheim" got absolutely obliterated by the critic, it was great!). Personally I like large toolkits rather than more linear adventures or situations. A lot of Michael Prescott's Trilemma Adventures are fantastic; Ben Milton's Patreon in a similar vein. Skerples' Tomb of the Serpent Kings is a great "starter" OSR adventure that teaches you how to play that style of adventure game.
The way I prefer to run OSR-style modules is more so introduce the characters to a problem with several obvious paths but no obvious solution. In other words, stick them into a chaotic or complex encounter with no "right" answer and let them figure it out. The classic of these are procedurally generated settings with random encounters or inspiration / mashup tables, hex crawls / point crawls, lots of factions, etc.