The trap is always visible sometimes but may be very hard to spot. This is what makes sports betting difficult and unpredictable. How do you avoid trap games? Are u able to spot them based on instincts?
Gambling will always be gambling. We can't predict the outcome completely, no matter the tactic you try to use to avoid those visible things you consider as traps; some will still fail you.
Most times the bookies don't even know what the outcome will be like. I believe they also allocate those odds based on the data they have on both teams; it could be a biased analysis sometimes to manipulate how gamblers picture the game, but they can't always be correct.