Analysis of bookmakers is the thing you should avoid if you want to focus to win.
Bookmakers don't care if you win or lose, so the article or analysis they give is mostly just a cheap prediction or helped by AI.
Parlay of safe bets (odds below @1.50) isn't safe too, the risk is pretty much same like betting on huge underdog.
The unpredictability of sports games forms a major part of this risk. Predictions and strategies are tools to give one an edge, but they can never guarantee a win because of the unpredictable nature of sports.
If you bet on top league, the results aren't really unpredictable. I'd say International match and International tournaments are more unpredictable.