I can't connect to my friend's world properly.

For some reason, as of Minecraft 1.16.0 Bedrock Edition, connecting to my friend's worlds is an issue, if I attempt to connect, it will take a while, and then eventually, the game fails to connect, and this is not a coincidence because it happens every time for worlds that has been loaded before in 1.14.60 or older. And it's not my internet because I have flawless connections with other online things on Minecraft such as servers, and worlds loaded only in 1.16 or newer.