What is the opinion of Reddit about the
axGear Chinese English Writing Pen Writing Pad Handwriting Tablet Driverless Window 10?

This is easiest on macOS, where there is a Handwriting keyboard that lets you write out the characters using a Magic Trackpad.

If you have a Windows 10 computer with a touchscreen, you can change to an inbuilt handwriting keyboard and write using your finger or a stylus, as shown here: https://felixwong.com/2015/11/how-to-write-in-chinese-in-windows-10/

As for a tablet, the only one that matched your description that I could find was this one, although it doesn’t have glowing reviews: axGear Chinese English Writing Pen Writing Pad Handwriting Tablet Driverless Window 10 https://www.amazon.co.uk/dp/B07NWBLNWQ/ref=cm_sw_r_cp_api_glt_fabc_MY83T15P0YZ5SHJZV569