i have a male jack russel and a female jack russel drexell and sassy they hate each other i really don't want to have to get rid of them when they get into to these fights we can separate them fast but if one doesn't like that they ll bit us i need to know how i can either prevent them from fighting or or how to get them to separate themselves so we don't Danger our self

Get a gun and shoot them both in the leg.

get shock collars. if they start fighting, press the collars' buttons.
it will take some getting-used to, but they'll learn eventually.
good luck!

they will never separate themselves. You need to make sure they are 100%sure that you are the pack leader. One thing you need to do is assert yourself as pack leader. They might be fighting in order to find a pack leader among themselves. If that is the case, you need to take them both on a pack walk. Get someone to walk with one and you with the other. Keep them both behind the people at all times of the walk. This will both tire them out (too tired to fight), might release some anxiety, and show them you are in charge.

Another issue might be food aggression or a toy aggression. Something starts the fights, find out what that thing is and get rid of it.

Also, getting them fixed might help.

A caution with shock collars; if you decide to use them, you have to use them for the rest of their lives. When you take them off, they will notice and revert back to poor behaviors. Also, if the aggression is fear based, this will make it wOrse