Thank you so much for taking the time to try to help me out. That is very kind & thoughtful of you & we really appreciate that!
We don't have an audio bar or anything yet.
I found out how to fix ours from someone else's comment post somewhere on this website, unfortunately, I can't remember the helpful person's username or exactly where I found it, to give them the credit they deserve.
However, his or her advice worked instantly!
If your audio gives you any more issues beyond what you already fixed, try this = Do NOT go into settings to the audio etc. to try to fix it. Instead, go to a video on any of your channels, Youtube, Netflix, anything and click to start the video and then on your Roku remote press the * (star asterisk) in the small popup that comes up, make sure that the audio does NOT say "leveling" and does NOT say "Night mode" turn off or default. When I did that it fixed even the worst audio issues on my Roku immediately. Good luck, I hope this helps you too.