An older TV without built-in apps just needs one small device connected to its HDMI port.
A TV that isn't "smart" can still stream just fine — it simply needs an external device to handle the app side of things, connected through an HDMI port.
A streaming stick is the simplest option for most older TVs — see our guide on connecting a streaming stick to your TV for setup steps, and our Devices page for currently supported platforms.
If the TV only supports standard or HD resolution, that's the ceiling regardless of the streaming device — our 4K and HDR requirements guide explains why.
Compare subscription options and device support to find the plan that fits your household.