T-Mobile Internet and YouTube TV

I had switched to YouTube TV from Cable a year ago. At that time I also switched to T-Mobile Internet.  I am having issues. I had an older smart TV, circa 2019 and all the other streaming services:  Netfilx, Hulu, etc. worked fine but YouTube would freeze up every once in a while.  A week and a half ago, I purchased a new Samsung TV.  Now, all the other streaming services work great BUT now, randomly when I to to YouTube TV, there are new issues, no volume and cannot get the show to come up. Any suggestions?   TM Internet says it is compatible with YouTube TV.