Tim and Delvianna have given you good things to pray about and be honest with God about these things they have shared. What I offer below is not meant to disagree with what they have said.
I have only gambled very small amount of money $2, the excitement of the chance to win big was there,
Ok, so it can look, here, like you are saying you would like to be rich. Beware >
"But those who desire to be rich fall into temptation and a snare, and into many foolish and harmful lusts which drown men in destruction and perdition." (1 Timothy 6:9)
"be content with such things as you have" > in Hebrews 13:5.
I think now of this > maybe > perhaps > by being more or less interested in using money to get a lot of money, you could be cutting yourself short. You can do better to develop in your ability to do good things which money is not enough to get. So, I mean, by giving such attention to what money could do, you could be short-circuiting your attention from what God is able to do in you as a younger child of God who needs to mature more to discover and appreciate what God and His love in you can make you ***creative*** to do.
I wasn't really disappointed it was $2 not enough to buy a bag of chips these days.
You mention chips, which can be a weight gainer and a money user-upper

And yes food can be a substitute for the satisfaction of learning how to relate in God's love with various people. So, yes you can discover doing with God what money and enjoyment of food can not do. However, God's word does say God "gives us richly all things to enjoy," in 1 Timothy 6:17. So, I do not mean you must not enjoy certain nice things and the money to get them; however - - - learning how to love, with Jesus and His example and word, is the most fulfilling education and adventure and accomplishment that there is.
I figured i'm not lucky and moved on.
How social is it? I suspect you do this by yourself. At least, get into some cheap-prize bingo, maybe. Even get some socially needy people together for some gaming which has no prize but that they are sharing with one another.
I can see how it can develop into a problem with people gambling excessive amounts of money, and they are devastated. But what about gambling such small amount of money it has no effect at all to the person who lost?
It depends. Our Apostle Paul says >
"All things are lawful for me, but all things are not helpful. All things are lawful for me, but I will not be brought under the power of any." (1 Corinthians 6:17)
If you are depending on it for excitement . . . this can mean you are under its power . . . including its power to affect where your attention is going. So, we need more prayer, with attention to God and God guiding our attention, then discovering.
If ones are isolating with things they like . . . Jesus wants us to get into how God has us loving >
"if you love those who love you, what reward have you?" (in Matthew 5:46)
The Bible says various things about how to relate with one another as God's children and how to relate with ones who are not God's children. You need to invest your time - - - your **attention** - - - in God's word, including about how to relate with one another as His family. And spend time with Jesus people who are good examples of this. Feed on their example, enjoy the chips
Could a Christian also ever be involved in the gambling business?
There is always risk in loving. But with God so creative we can create His good in spite of however others do us wrong . . . even using what anti-love people do - - - using their evil to bring about God's all-loving results. Have you read and fed on how God did this with Joseph? > this is in Genesis 37-50.
Although some people move on, for others it destroys lives and they wished they never gambled. or is gambling seen as a legitimate business just like farmers?
We could have quite a debate about this. You could say gambling ruins lives, and I could argue that farmers produce food which people abuse so they are overweight and dying of diabetes and heart attacks. But I rule in favor of what Delvianna and Tim have said > my argument might be clever . . . but not really relevant!!
Among other things > it can be the farmer has learned many skills and has been providing for his family and bringing up his children to have character and the right kind of work ethic and to know how to love and relate as family. There is much investment, so more than gaining money, in so laboring. I suspect that a gambling business might not be so useable, like farming can be. Where would your children be, what would they be learning??
You can grow in Jesus to discover what God can do with you. What you can think about now can evaporate as you mature with . . . us.