Alexa smart dimmer switch for LED lights

[clockworks]

Mum has two ceiling fittings in her lounge, each with 6 small LED lamps.

Visited yesterday, and she had bought new lamps because a couple had failed. She bought two 10 packs of cool white, and I swapped them over for her.
She prefers the cool white colour, but they are way too bright for TV watching in the evening, so I want to fit a dimmer switch for her.

She likes switches with big buttons (not a rotary knob or small toggle), and already uses Alexa for the TV and a couple of Govee side lamps.

My house is all done with smart bulbs and Shelly switches, I don't have any physical dimmers.
What's the best smart dimmer switch with a physical override that isn't a rotary knob or small toggle?
She'd like to be able to use Alexa voice commands such as "lights on/off" and "lights 20%", as well as touching the switch.

Apartment was built 8 years ago, so it might have a neutral behind the switch - I've not looked yet.
Needs to be 100% reliable once set up, as she's 88 and not at all "techie".

[The Three D Mucketeer]

Could put Phillips Hue Bulbs in and use ALEXA or a phone to dim them. (or the wireless battery powered dimmer module). expensive but I recommend

Edited by The Three D Mucketeer on Sunday 8th February 10:22

[Rotaree]

We've got Lightwave throughout the house, which I think would do all that you need.

[clockworks]

To add:

They are G9 lamps. Replacing all 12 of them with smart lamps would cost £100+ even with no-name Chinese stuff.

[clockworks]

Rotaree said:

We've got Lightwave throughout the house, which I think would do all that you need.

Probably overkill for one switch at £200 including the hub