Finding out that entry point and exit point is the trick of the price action anyway. Just like how when you do chart readings, TA, indicators and what not and go into trading after that, in price action you gotta check out whats going on and figure it out before anyone else and react to it which means you gotta find the best entry point and exit points you can
You can just look at the recent price dynamic
If you don't care about indicators and just want to trade volatility, you can even open two offsetting positions, long and short. That will be your entry point if you don't know how and where to start out on your trading journey. Then buy low and sell high in small chunks. After that, rinse, repeat. It will work itself out eventually to your advantage and money in your pocket. As I wrote in my previous post, all you need is capital and price action