The process of selecting a fast betting platform.

Hello everyone! I would like to make the attempt of betting on the Internet, but I cannot understand which services are really fast and reliable. Some of the services, I heard, have considerably long result delays and withdrawals can take days. I do not want to waste time and money. What is the best way to predict that a platform is performing well? What are the things I should be looking at when selecting a site? Are there any reputable places where I could bet low sums and receive fast results? What are convenient and safe: features?