I wanted to add, that I'm interested in people opinion's overall about these devices, my short experience was positive, but I'm open to getting something different if it would be a more effective option. Examples:

https://www.amazon.com/MaxKare-Shoulder-Massager-Electric-Kneading/dp/B06XWJWWYV

https://www.amazon.com/Naipo-Massager-Compression-Vibrating-Relaxation/dp/B07C5VWQCC