Or this: https://www.ribblecycles.co.uk/shima...nset-11-speed/

...and done (ideally purchased as part of a groupset to save even more money.

It isn't the tooth profile that changed when changing speeds, it is the ring spacing and design of the ramps and pins for the narrower chain. When good cranksets are so inexpensive it makes little sense to experiment with random Ebay chainrings which might, if you are lucky, save you $20.