Am thinking of starting a betting journey and have hard experience in slots and other online gambling games which are risky because it requires a gambler to have some skills, but in tennis or live football betting is all about predictions and luck?
Which will refer for a beginner should bet on tennis games or football which among the two is easy to forecast.
After reading your post several times I think you should quit gambling! When you think that slots and lucky based games need some skills I believe you didn't even try to learn more about those games and how to play them, so you lost some money, and with the same strategy you plan to bet on tennis or football... where "is all about predictions and luck"! I can only guess you will have the same destiny as with your first time!
If you are really eager to gamble try to read more about the games before you try them... when it's about sports betting try to bet on the sport you know, the one you like the most and you have a desire to follow it from week to week... and only then try to make predictions and you will rely more on yourself and your knowledge about that sport than on luck! Luck is important, but it's crazy to just throw bets around and rely only on luck!