Google has ended support of its first-gen Chromecast dongle. These alternatives are your best bet for a replacement.
Google Chromecast with Google TV (4K)- Streaming Stick Entertainment with Voice Search - Watch Movies, Shows, and Live TV in 4K HDR - Snow : Electronics
Google's first-gen Chromecast will no longer receive major updates
The first Chromecast is obsolete. Here's what you should get next
Google's new Chromecast costs $30 — and it has a remote
How to set up Google Chromecast
Expand your home entertainment without buying a new TV; Google Chromecast [1] lets you stream your favorites from your phone, tablet, or laptop; no
Google Chromecast - Streaming Device with HDMI Cable - Stream Shows, Music, Photos, and Sports from Your Phone to Your TV
Content and performance - Chromecast Ultra review - Page 2
Chromecast with Google TV: What you need to know - Android Authority
The original Chromecast has reached its end of life
End of Support: First-Gen Chromecast's Era Comes to a Close
Chromecast vs Fire Stick: Which streaming device is best for you?
Google Chromecast with Google TV (HD) vs. Chromecast with Google TV (4K): What's the difference?