Hi @mamir5,
Greetings from the Roku Community!
We understand that your Roku remote is giving you trouble because the volume buttons are hardly usable. We'll be happy to help, but we will need more details. Could you elaborate more about the issue that you're experiencing? What type of remote are you using right now? (universal, simple, or voice remote) What troubleshooting steps have you taken so far?
With detailed information, we will be able to assist you further.
Best regards,
John
Go to Best Buy look at the Insignia universal remotes:
Insignia™ 5-Device Backlit Universal Remote Black NS-RMT5D21 - Best Buy
Open box ones are little cheaper. Code for Roku tv is 4398.