I will just post 2 examples of games I am quite proud of:
black to move, can you find it?
25...Qxe2 is a mistake, how do you punish as white?
26 . Rh3+ (doing it with the other rook also works) Kg8 27. Rh8+! Kxh8 28. Bf6+ Kh7 (Kg8 is met by Rxg6+) 29. Qh3+ with mate
I tend to have quite a few combinations in my games, although that wasn't the case before. I have just started playing more relaxed, not worrying about doubling pawns, not castling as quickly but when I see potential for an attack I instead throw my h-pawn forward, that kind of stuff. I used to play very solid and positional but try to mix it up more nowadays. It has given me nice wins and terrible losses.
IMHO most combinations come from inbalanced positions with weird pawn structures (I am structurally quite worse in both my examples). I think certain gambits like the smith-morra and blackmar-diemer don't necessarily lead to combinatory play, I actually always have quite boring games when playing against those openings Usually the structure is pretty symmetrical and the open space usually leads to early exchanges.
I do not play openings (d4 as white, caro-kann as black) that are considered sharp (except for the benoni) and get sharp play quite often. But as others have stated, winning without flash is at least equally good as winning with a combo although not as satisfactory feeling, I know.