In this thread I share my opinion. I know 2 types of gambling. Sports and casino. I have both types experience. At first I started to play casino like roulette, dice, ludu. Roulette was my favourite casino table. One day I won 7k usd on roulette table. But I couldn't retain it. I lost all the usd in 10 minutes and day by day my lossing amount increased. Sometimes casino table was so tough. Whatever I bet all lost. No sequence maintained. If I won a day, I would loss 5 days at a stretch. It seemed all was fixed. I shifted to sports betting. I started to follow biggest football league like English premier League, la Liga, french Liga etc. Researched the teams statistics and placed bet. Gradually I covering my losses. What's your experience?
Depends upon the convenience that it provides.
Generally, people who bet in sports are also the ones who are fans of such respective sports. For example, an avid NBA player would most likely bet on his favorite team against an opponent since they are relatively knowledgeable about it. If they can research about the standings between teams, it may give the person a broad idea on which team to bet.
On the other hand, betting on a casino involves various methods (such as the ones you have mentioned). If you feel more comfortable betting in casinos and doing card games, then this is most likely the type of betting you should be doing. It all boils down to your personal preference and knowledge on the topic.