I want to invest my money in Bitcoin. I still don't understand if my decision is right, please let me know your opinion
Is 1800$ the only amount you have? Investing in bitcoin is a good investment, but investing all of our money in it is not a good idea as the future is unpredictable, so never put all your eggs in one basket. No matter how bad the crisis is, cash is always needed in all cases, so I advise you to have a reasonable allocation to avoid difficulties in life. You should only invest 50% of it in bitcoin, and the rest you should save in cash for everyday expenses and emergencies.
One of the most important things, your country is still banning bitcoin, so be careful with your bitcoin investment if you don't want more trouble.
I do not find any bad moves by @OP in thinking to invest his $1800 to bitcoin. It is from some earlier investment and I believe @OP have his own job to maintain his financial needs and at the same time save some cash money.
I am also against an all-in act in an investment because a person needs money to maintain the expenses for his basic needs. I also think that a person must also save some funds for emergency and unexpected events. But if a person have the luxury to invest huge money to Bitcoin without affecting the budget for his basic needs and emergency savings then I think there is no problem in investing to Bitcoin with the said huge amount.