Things like BetFair let you place bets both sides (unlike some shops like Ladbrokes where you are betting against them). This allows you to track the current betting prices and create situations where no matter the outcome you can make money.

There are a few places on the net explaining this in more detail.

I have some bots placing bets for me 24/7 on betfair. They provide a nice API for that (https://developer.betfair.com/default/api-s-and-services/spo...).

The bots written in JS running on a node.js server. The strategy (bet pattern) I use is actually pretty simple. But it's not betting on low odds only, tryed that and failed :)