My edges keep on breaking and I don't know what to do
you can add a mixture of castor oil and almond oil on them. Make sure to not overly brush or touch them as that can cause breakage or damage.
There are several steps to take for your edges to regrow. First, use extra leave in conditioner of your edges; not too much just a tad bit. Edges are one of the first parts to be exposed to the environment and to sweat which causes them to dry out fast. Second, choose styles that do not require much tension on your edges such as super sleek ponytails or micro braids. Edges are fragile and need to be handled extra carefully. Lastly, having non sleek edges is ok; your edges will thank you.