I was at a friends house last night and I entered a very low stake no limit, winner take all, 3 person tournament. 10-20 blinds and we all stared with 500.

I had pocket 2s and I was SB. (Very first hand, I know nothing about the other 2 players).

Dealer folded.
My friend suggested I go all in, but I made it 80 and was called.

Flop: 4, 6, J rainbow.

I bet the pot, (160) and was called.

Turn: 8

I then went all in and was called. The flop helped no one and he had QJ off.

Clearly I played the hand wrong. Can someone explain to me the better way to play pocket 2s in my situation?

Should I have gone a All-In preflop as my friend suggested….why or why not (please explain because after my loss he believes I should have taken his advice).