Loosing my toenails?

[Pigleychez]

The nail on the third toe on each foot has seemed to have split and is lifting off.
Its not bruised at all. I do kickboxing training twice a week so guess it maybe related to that as its both feet?

Been reading online but reading contradicting advice. Do I try and cut off the lifting nail or leave it.
Im worried about catching it and ripping it off completely but then I could make it worse/more likely if theres more sharp edges to get caught?

I do fell running and I lose my big toe nail and one of middle ones every so often, normally I get bruising and then the nail just eventually falls off. I cut the loose nail short but straight across as normal and then wrap my toe in zinc oxide tape if it has a loose edge or might catch. After the old nail falls off a new nail gradually grows up but the nail beds have been weakened so that nail is more prone to falling off again. Don't pull at the the nail or cut at the loose edge vertically or it can get infected or leave a sharp edge. Just one the hazards of doing a sport we love I guess!