I am having trouble with some keys on my keyboard

Hello Dear,

I am Chongshelto, few days ago when I was writing a letter to my son, all of a sudden my keyboard key stopped working automatically. I thought that maybe I have not used the keyboard for a long time so it will happen, I also cleaned it with this liquid. Still, the key is not working. Some of the keys suddenly stopped working like s , x ,w ,esc,ctrl. I don’t know what is the problem but it seems some software problem.

If you have any solution then please share with me.

Thank You.