I have never found a hard seat in a dining room to be a good idea. I like to have an upholstered seat. A faux leather fabric will be both comfortable and durable. Another idea would be to soften the room

Eclectic Dining Room in Craftsman · More Info

Do any of these appeal to you?

https://www.target.com/p/carlisle-low-back-metal-dining-chair/-/A-14632009

Both of the above can be found in many colors.

Lovely Home, We really love your home. The Delfin Chair is your best modern dining chair option if you want to update and modernize the appeal of your dining room. It is not only stylish but is also affordable from us. They are available in 4 variations of colors.

Some recommendations for dining chairs based on the popularity

[https://www.houzz.com/products/delfin-dining-chair-gray-prvw-vr~96164170?lid=73987605[(https://www.houzz.com/products/delfin-dining-chair-gray-prvw-vr~96164170?lid=73987605)

[https://www.houzz.com/products/delfin-dining-chair-black-prvw-vr~96164149?lid=73987586[(https://www.houzz.com/products/delfin-dining-chair-black-prvw-vr~96164149?lid=73987586)

[https://www.houzz.com/products/delfin-dining-chair-espresso-prvw-vr~96164161?lid=73987594[(https://www.houzz.com/products/delfin-dining-chair-espresso-prvw-vr~96164161?lid=73987594)

You can check here the entire collection of dining chairs

https://www.houzz.com/viewCollection/45459/p/48