How do you actually bet live without it turning into chasing?
Written by Live betting gets a bad reputation, and most of that reputation is earned, just not by the tool itself. It's earned by how most people actually use it: as a way to react to a game in progress instead of a way to execute a decision they already made.
The right way: a planned price target, not a live decision
Say you liked a team at -7.5 before kickoff, but didn't love giving up that many points. If their opponent scores early, that same team might become available live at -2.5. If you already wanted that side and were just waiting for a better number, taking it now is the same pregame decision, executed at a better price. The position existed in your head before the game did. Live betting here is a tool for patience, not a new idea invented mid-game.
The wrong way: chasing the game you're currently losing
The failure mode is betting live because of what's currently happening to your bankroll or your emotions, not because of a plan you made in advance.
Why live markets are a harder environment to begin with
In-game markets are generally priced with wider margins than full-game lines, since the book is pricing in more real-time uncertainty and knows a meaningful share of live action comes from bettors reacting emotionally rather than executing a plan. That's a harder environment even before you factor in the biggest problem: there's no time to think, and the whole experience of watching a game swing in real time is built to provoke exactly the reaction that undermines good judgment.