Unable to connect to friend's world

Unable to connect to any friends world but able to connect to realms and to my brother's world which is on same internet connection.

 It shows "Unable to connect to the world"

Earlier I was able to connect any world when I was using a different router but since I changed my router this issue is occurring.

Previously I had TP-Link Archer 200 and now I have Huawei HG8145V5