A good Sicilan line for someone who likes the Vienna Hybrid Bishop's Opening
If you want to avoid the Open Sicilian, maybe try the Alapin. But even for the Sicilian Alapin, there is a lot to learn, this book on the Alapin is about 456 pages for example:
https://chess-tigers.de/en/products/khalifman-soloviov-squeezing-the-sicilian-alapin-variation