first different-style "low level" lichess puzzle

how would you describe this puzzle?

lichess.org/analysis/5rkb/7p/p3q1p1/1p2p3/3pQ2K/3P4/PPP4R/6R1_b_-_-_0_1#1

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are sacrifices like these more frequent in more advanced puzzles?

"how would you describe this puzzle? " - easy, because even I solved it in one second

"are sacrifices like these more frequent in more advanced puzzles?" - no, they are usually more difficult to spot than that easy one. Have fun

This is how the worldchamp play and sacrifice in a bullet game:

how is that a sacrafice? its just a fork

Very nice!