How can I quit gambling?

I keep gambling at online casinos. When I make money, I immediately go to gamble.
Since the end of last month, I have lost about 20,000 dollars. It may not be a lot of money for the wealthy, but for an average Chinese person, it is really a significant amount.
Fortunately, this money was earned by me directly, so there is no external debt burden. However, because of the issue of not being able to repay the loan on time in the past, the bank does not grant me loans now.
But after constantly gambling and losing all the hard-earned money, my mental state is always not good. Recently, I often go to bed late and barely wake up until noon.
Is there a good way to prevent gambling?
I wanted to hang out with my friends every day, but I don't have many friends and they all have to work all the time. It seems like there is no one around me who is unemployed like me.
I also tried to look for a job, but since I have no actual work experience and have only worked on projects or in BD in the cryptocurrency field, it's almost impossible to find a good job in reality.
I have also tried to allocate my assets to more stable assets like gold or Bitcoin, but every time I lose money, I first try to earn it back through gambling.

I feel like my life is over.
I was born in 2002, but I tend to look a bit older, like someone born in 1992. My nose is full of blackheads, and I don't know how to solve that. Recently, my mental state has also been quite poor. Unlike when I lost all my money to gambling in the past, now I feel an increasingly deep sorrow that I can't put into words.
I want to tell everyone not to gamble. You have to work hard to earn money. Once you get addicted to gambling, life is always filled with sadness. Right now, I am in a state of viewing the world extremely pessimistically.
Maybe someday I will also jump off a building and commit suicide.