Facetime not working properly on iPad error ‘connection unstable’

Got the latest ipad and its been working just fine until I did install recent updates on my Apple devices, because Apple released a couple of updates. After such I always get disconnected when doing facetime using my iPad but its working fine if I’m using my iPhone. I encounter same issues when using messenger for video calls too, its so so so fristrating. I already did everything but still its same issue and its getting really annoying as I had to use facetime everyday. Its the main reason I purchased an iPad so I can do facetime calls but it gets irritating its been months now and it always been like that. The iPad no longer serves its purpose. Please fix the issue.