Rip my logic cause I'm a newbie

[Propping Fool]

I am thinking of blindly betting huge favorties in NFL and College (more so college). Moneyline bets only. A good example would be the colts titans game. For argument sake, lets say the line is -900. Cant the tiatns pull of an upset once every 9 or 10 times? I dont see it happening. I am totally new to sb though and looking for pros to explain why these bets are -ev.

I am only trying to make 5% on my br every week. the strategy is to bet as many games possible. Lets say I have a 10k br, then I find 15 games to bet...I would bet $666 per game. Of course there will be some upsets, but I am only looking to turn a profit of $500 for the week.

Rip away, Im sure this has been discussed before in this forum. I dont have the time or energy to get into sb deaply, so maybe this is my best play?