Simple Understanding of Position Sizing in CFD

I see many people like to enter CFDs without paying attention to Position Sizing. In reality, it's very important. If you put in the same amount of money every time, without looking at how wide your Stop Loss is, you're opening the door for your portfolio to explode. Think about it simply: if $MATIC is currently priced at 0.2826 and you want to enter, but your Stop Loss is deeper than $SHIB at 0.00000425, how can you buy the same number of contracts when the risk per unit is completely different? The principle is to calculate the risk you are willing to accept per trade (e.g., 1% of your portfolio) and then divide it by the size of your defined Stop Loss (as a value per 1 contract). The result is the number of contracts you should open. Doing this will help you truly control your risk per trade, not just guess day by day.