With 44, you are about 50% to any two random cards and only 20% to a higher pair. I don't like calling all ins unless I have a good read on the opponent (or I have AA).
At a nine player table, somebody has AA every 25 hands, a pair every other hand. It is not that rare.
With 44, you were right to raise, but should have folded to 10X all in. Had villain been short stacked (<10BB), then I would have called because of the bet to pot ratio.
With 44, you rarely get to the river with best hand. You want to catch the third 4 (set) and hope to double up when you do. But you only catch that set about 12% on the flop, so you want to enter with a small pair on the cheap. You also need your villain to have about 20-25BB to make it profitable.
If you want to consistently go deep in mtts, you want to play (mostly) small ball. Avoid calling all ins when you might be beat. I understand you have to call sometimes, but a small pair is not the best time to risk your tourney.
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