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In some cases gamblers who end up addicted always start with mistakes in putting hopes and expectations so that it makes them suffer a lot of problems, especially in terms of finance. Of course it's really not advisable to put your hopes or expectations on gambling because after all this is a probability activity which means it has absolutely no certainty of anything other than chance, so you better keep yourself safe with some precautions, because that's all that really matters.
there are lots of mistakes gamblers make that make them addicted and you have explained one of the reasons and it makes sense, but another thing apart from placing hope in gambling is the mindset about the big win they get can trigger a gambler to become curious and want to experience the same sensation. after getting a big win and gamblers will ignore managing money well because they only think they want to get the same big win as before so they become addicted after money management fails.
advice is always given here that dont think too much about something big from gambling because winning is just luck that doesn't know when it will come and when it will go so far that we can't catch up. however, there are still many gamblers who ignore these small things which can have a big influence on their gambling, and addiction has even increased in recent years because they fail to manage their finances, ignoring any advice from other people.
so from this story we should be able to conclude that any advice from other people is very important to listen to and always dont ignore discipline in managing finances so as not to lose control.