How Can I Push The Game Into Tactical Positions?
You can't force tactics. To master chess, you must master all aspects. Calculation, Tactics, Strategy, Planning, Positional Play.
Not all winning ideas are 3 to 5 moves. All you can do is play openings that lead to a higher percentage of tactical games, but there is no way to absolutely force it.
But even openings with a reputation of going one way wind up the opposite. I have had positional Najdorfs, Kings Indians, Grunfelds, and erratic Slavs, Exchange Frenches, Petroffs, etc.
Like if you were to play me over the board, your odds of a highly tactical game are actually better if you play d4 as White than any other scenario.
I get White, you are likely getting a Trompowsky or Levitsky Attack.
I get Black and you play 1.e4, you are getting 1...e5, and you have to play something like a Vienna or Bishop's Opening or Kings Gambit as otherwise, you get a Petroff. No Italian, no Scotch - Those that try to sneak it in with 1.e4 e5 2.d4 exd4 3.Nf3, I answer with 3...Bb4+, not 3...Nc6 - etc.
Against 1.d4, you'd get 1...e6 from me - then you can play a French if you want - otherwise an e6-Dutch (no Leningrad)
You can also get a French after 1.e4, but only the dull exchange via 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d3 Nf6 6.d4 d5.
So no, you cannot force a tactical game.