I clearly remember 3 stages how I got familiar with gambling.
First - when I was still in school, on the way home some of my friends were discussing how they easily won a bit in slots. "All you have to do is to get 3 ships, and guess right colour (red or blue) in a free game". So on the way home, we have entered that casino (actually a room with slots), even though it was 18+ only, and we were not even close to that age. I remember how I have inserted equivalent of 5$ bill into a slot, everything was flashing, I have pushed random button several time and lost everything in few minutes.
Second - it was sort of a poker nights during first years in university. It was a mix of poker with buy-ins and drinking whiskey.
Third - I was on a boxing event, and before main fight of the evening has started, a friend of mine said that he is going to place a bet. I did not know how he is going to do that, but he just got his phone, opened betting platform page, made few taps and that is it. I got really impressed with that, with how easy it was to place a bet on a sport event. I always thought that I have to go to sports betting places, talk to a manager/special person, make a bet and spend time there, to be able to collect a reward. But that phone taps and instant deposit/withdrawal really impressed me.
P.S. What also really impressed me, that in my "first" story, when you win in slots in those casino rooms, slot machine did not give you anything (even though you insert coins and bill in there). Instead you go to a manager and call him to the slot machine and show your balance and ask for a withdrawal, then go back to a cash desk and receive cash
If you are there alone, while you are walking from slot to manager, that slot can be occupied with someone else. There were cases, when you return, you see someone spending your balance, or that person can say that you have left that slot and left balance on it, it is your fault and nothing can be done now. So you basically got bullied.