any sentence is write and why

[zaq]

MYbrother practices piano everyday or MYbrother practices on piano everyday or MYbrother practices on the piano everyday

My father srious man or My father is srious man or My father is a srious man

[The French]

My brother practices piano everyday or My brother practices on piano everyday or My brother practices on the piano everyday

My father serious man or My father is srious man or My father is a srious man

Hello, I am not a teacher,

But what do you think about the following sentences:

My brother plays the piano every day.

My father is a serious man. (Suject + verb + determiner + adjective + noun).

Hope it's help you.

Bye.