We know that playing is very afraid of risking what we have, but are you afraid of risking everything you have? Or do you have your value and strategy limits? I'm starting to bet now and I'm a little afraid of what I should do, so I came to you to ask for tips or even advice? Can you help me? 
Note: The very moment you chose to gamble, you've already chosen to take risk automatically.
The only way to avoid this risk is to avoid playing gambling. Now, to answer the question in your thread heading, you need to design a working plan for your gambling activity with budget and risk management to avoid taking too much risk. Having a budget for your gambling will prevent you from spending too much on gambling because risk management will tell you to stop after exhausting your budget for the week or month as the case may be.
Unfortunately, majority of gamblers still battle with this two safety practices of gambling. They will prepare the plan with budget but fail to adhere to the plan they designed and eventually lose their mind to dive into addiction.
It would be good idea to have a strategy - when you understand your goals, you can calculate risk odds more correct.