One of my cousins just gave me a TCL Roku tv he had it in storage, I think it's 22 inches, model number 32S3750, manufactured in 2015. They did not find the remote. l was wondering if I bought a voice remote would it connect to the tv.
Yes, Voice remotes work with all roku tv's, do not get the Enhanced Voice remote with headphone jack, it would be a waste of money since the headphone will not work on your tv.
There are also many universal remotes you can find at typical stores that may support Roku TV's.