Is this TV good for a bedroom?

Yes. At 40 inches and 1080p it is a good fit for a bedroom or small room where you sit fairly close. The picture is sharp at that size and the Tizen apps cover the main streaming services.

Does it support 4K or HDR?

No. The panel is 1920 x 1080 Full HD with no HDR support. If you want 4K, look at Samsung's higher-tier lines or another brand's 4K models.

What streaming apps are built in?

Tizen includes Netflix, Prime Video and YouTube, and you can add more from the Samsung app store. A Samsung account is needed for setup.

Yes. It uses a standard VESA wall mount, and owners say it is light enough to hang easily. Check the mount's screw pattern and weight rating before buying.

Does it have Bluetooth or Wi-Fi?

It has built-in Wi-Fi for streaming and screen mirroring from phones. Bluetooth audio support varies by region, so confirm on the spec sheet if you plan to pair headphones.

Is it a good gaming TV?

It is fine for casual console play, but the 60Hz panel and lack of HDMI 2.1 features limit it for fast competitive games. Serious gamers should look at sets with higher refresh rates and low input lag modes.