Thanks for the post.
In order to set up your Roku TV again, you will need a physical remote. If you need a replacement remote for a Roku TV, you would need to contact your TV manufacturer. You can contact TCL here: https://support.tclusa.com/televisions or at 1-877-300-8837.
You can also purchase a remote that is compatible with your Roku TV here: https://www.roku.com/products/accessories/roku-tv
Thanks,
Danny