I'm a cash game player that is consistently getting to the final 5% of tournament player pools but can't crack the final table, or if I do, I usually finish in the 7th, 8th or 9th range. I've noticed that I play the same style as earlier in the tournament and I'm wondering if this is where I'm going wrong?

In these stages, the stack sizes are around 20-30bb. Should I be tightening my entire opening, calling, 3betting and 4betting range preflop?

Any late tournament tips (or theory) would be greatly appreciated :)