TeamJK0816-
Without a remote about the only option open to you, other than buying a current non-obsolete Roku model that comes with its own remote, is this:
You will need all of these:
-- A Roku that is still set up for its prior network. If it was no longer connecting to that network when you shut it down, if you have cleared its network settings, or if you have done a factory reset, your only recourse is to use a compatible remote to set the Roku network connection up.
-- Knowledge of the network name (SSID) and password that the Roku is currently configured to use.
-- Access to your current router's control panel. If you don't have this access, scroll down to the third method.
-- A phone or other mobile device with the Roku app (not TheRokuChannel app) installed.
If you have ALL of the above: Go into your router's control panel and set your new network to use the same network name (SSID) and password as your previous network. Pull the power plug on your Roku for a few seconds then plug it back in. When it boots up it should connect to your reconfigured net.
Now when you connect your phone to this same net you should be able to use the Roku app to control your Roku once again.