Hi Crotou,
welcome to the Apple (user-to-user) Community.
Re: When i facetime im freezing a lot.its not my wifi because no probleme with my ipad
We do not have much info., about your device to help us troubleshoot ... maybe you get an error-message ?
Wondering which device model, and OS version you use, and what you have already tried that hasn't worked etc.,
Eg: If it is an iPhone you are using:
✽ Try re-starting your iPhone (deletes temporary files, re-establishes connections, and
will often restore order if something is not working as expected: Restart your iPhone - Apple Support
✽ Check which iOS version is installed on your device :
Eg: About iOS 17 Updates - Apple Support says 17.1 is the latest version.
✽ Please check whether you are using "low power" mode.
If so, you may want to try turning it off.
Apple Support's article may help: Use Low Power Mode to save battery life on your iPhone or iPad - Apple Support
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✽ Else: check if the problem happens when there is only a low % charge left on the phone.
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✽ See how many other computers / devices are also using the wi-fi when you have difficulties:
or
How to: Resolve Wi-Fi and Bluetooth issues caused by wireless interference - Apple Support
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✽ Another possibility is the iPhone could be short on memory / storage space in which to operate.
How to check the storage on your iPhone and iPad - Apple Support
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✽ What to do: If you can't Make a FaceTime Call on your iPhone, iPad, or iPod touch - Apple Support
✽ You may have mute turned on in FaceTime, and need to turn mute off. (microphone icon / slash through icon)
✽ Check ScreenTime > Content > Privacy settings to check microphone is not blocked.
✽ What to do: If the microphones on your iPhone aren't working - Apple Support
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For more info / support / contact options if needed:
FaceTime Support Website:
FaceTime - Official Apple Support
All the best :-)