Problems with racket

I recently posted a question on my new racket problem. But now this is turning out to be serious. my coach is now yelling at me tohave proper grip,play with spin. Be relaxed,spin the ball etc. I am really frustrated. He says I topspin better with.my.previous racket which was almost antispin. identify know what is happening. With old bat he was praising me but now.......I don't think it's about adjustment to new Rubber. And my rubber also gets dust meanwhile but I clean it. When it's clean also then also BAAD PLAY.....

Help needed