Advice for choosing a betting platform

Starting to explore sports betting more seriously and trying to figure out which websites are actually worth using. Plenty of ads promise huge odds and bonuses, but when digging deeper it’s hard to know which ones are reliable long term. Football and basketball betting would probably be the main focus, though live betting during games sounds interesting too. Some friends say mobile platforms make betting much easier, while others prefer the standard web version. Looking for suggestions from people who already have experience with different sportsbooks. Which platform works well, has a decent selection of events, and doesn’t feel complicated for someone still learning?