I have recently bought one of these from Viking Optic.
Fits many phones and many eyepieces.
It’s inexpensive, so if it doesn’t work it isn’t a tragedy.
It’s taking a bit of practice to get used to it though
The new Smartphone adaptor is a quick and easy to use adaptor ideal for capturing images with almost any model of smartphone. It will accommodate smartphones from 55mm up to 85mm in width, while the eyepiece socket is fully adjustable from 34mm up to 65mm.
www.vikingoptical.com
I imagine there will be plenty of other brands available