In betting there is an ultimate goal about big or low wins, from both of them I feel if we only look for low wins then it still looks easy without expecting a luck, but if we expect a big win then at least we will expect luck even though in-depth analysis has been done
Are you sure? How often you have made low wins? I mean if we are able to earn something which is even low in value, we may repeat the same process and add-up those small wins into a big one. I guess you are talking about winning small per game which is possible only once per game hence we may need to wait for another game to happen which may take some days or even a week.there are many other factors in sports gambling that in my opinion can be obtained from experience.
Experience must be a good teacher everywhere, I agree. But, personal interest and being a fan for one particular sport will help you to learn and to become an expert with all rules and tactics of that sport. This will lead to analyze the capability of individual sportsman and their team so that predicting their performance may become easier for any gambler. 
. Also, it was a big factor to look when you are in situations in which you can't decide where to bet. For example, the match is between Adesanya and Whittaker (assuming their fight nor yet happened). They are both good and skillful fighters thus they almost got the same chances of winning so the last option you might have is to bet on what your gut feel says. 
