Absolutely. In fact, a lot of ASMR fans use these kinds of videos specifically to fall asleep. They can help you switch your mind off and reach a state of deep calm and relaxation. You'll get the best experience by listening with headphones, so as long they're comfortable, and you won't get tangled, it can be a great sleep solution. If you're watching on your phone, turn on your blue light filter to help counter the adverse effects screen time can have on your circadian rhythm.