Prevention is key.
Use a good smoothing conditioner.
Don’t brush your hair when it is soaking wet, it can pull and stretch the hair and cause it to break.
Use a vent brush, the kind that has space between each tooth of the brush. I don’t know if tooth is the right term, but that type of a brush is similar to a comb in that it is like a bunch of single needles. If you use a round brush for styling, only use it when your hair is dry or very very close to dry and only at the ends. When brushing through knots hold the hair right above the know and start detailing from the bottom and work your way up towards the scalp.
Let your hair dry naturally part way if you aren’t already. I dry my hair a little, then I dress, or eat, or put on make-up, and let it air dry 10–20 minutes, and then come back and do final drying and styling.
If your hair has been very dry consider medical conditions like a thyroid condition as a possibility if you also have other symptoms That might point to it.