I'm going to give you a simple and straightforward golden tip to help you stop acting like a casino addict by buying coins without thinking.
Tip:
If you can't make small profits with $100, $300 or $1,000, there's no point in investing $5, $10k, your car or your house. Everything is proportional—both profits and losses. If you're losing, stop, analyze, and keep playing with what you have until you learn. Increasing your investment while losing will only increase your losses.