How does this work with netflix?

As an absolute technology Noob, I ask, how exactly does that go with the streaming of Netflix on my TV. Have a Smart TV.

If someone knows how to handle and explain that to dummies, I would be very grateful!

If there's a Netflix button on the remote, then it is not wrong to press it. Then just log in and you're ready to stream.

Does not your SmartTV have a Netflix App or Internet Browser?

Which manufacturer is this device from?

Try to find the application NEtflix in the Home menu. If this does not work, look for the Playstore and look there for "Netflix" then download it, search for the application and then start it. If this does not work, check out the supported services of the Smart TV on the manufacturer's website. Make sure you also have an internet connection to the TV.