It's a combination of both skill and luck. You can improve your chances of winning/making a profit through skills and experience but at the end of the day you still need some luck to win certain bets. I've had lots of instances where I only needed 1 goal/corner/yellow card to win my bet with just a couple minutes of the game remaining. Sometimes it hits,other times it loses, but I personally consider it luck since it's not in my control anymore and anything can happen.
Luck with experience for winning or losing it may be a combination of both for some time / most of the time I am a combination. At the end of the day luck has to be given more priority. Betting games sometimes the best team loses it affects your win or loss with the luck of that team. I want to believe that someone from behind can push to ensure the defeat of the best team by showing bad play or after being aware of the secret strategy of that team it affects the ordinary gamblers to lose at the gambling board. Most skill or most luck is debated by many and I do not want to compare my gambling experience with this process because I know that gambling is psychological and losing is normal and the chances of winning are very low so the main thing is to manage the bets considering having fun. To keep the chances of winning high, spread your bets on different boards and at least one can be guaranteed to win and you can also profit.