Xbox clips have disappeared

I have done that and they are still not there, only ones from 90 days ago

I know how to see and edit my clips but they have all dissapeared apart from my very recent ones, and three from 95 days ago... there are over 80 clips missing

From doing a deeper search sometimes game pics and clips that haven’t had any views or engagement may be deleted at some point, you might want to backup your pics and clips. You can do this from your console or your PC

Hi MackNewman23,

Have you tried doing the following

Manage your game clips on Xbox One

When you make game clips using the Xbox One capturing feature, you can use the Upload Studio app to view and edit them. You can work from game clips you’ve captured, or you can record video or audio commentary about your clips using your Kinect sensor.

Note Upload Studio is not installed to your Xbox One console by default. You can download it for free from the
Microsoft Store.

To find and edit your clips:

1. Press the Xbox button to open the guide, and then go to Broadcast & capture.
2. Select Recent captures. If your clip isn’t a recent one, select See All.
3. Select the clip that you want to edit, and then select Edit in Upload Studio.
4. If Upload Studio is already installed, it will open to your clip and you can begin editing. See Editing videos with Upload Studio to learn how
   to edit your videos.

Here’s another way to find your clips:

1. Press the Xbox button to open the guide.
2. Go to Broadcast & capture, and then select Capture > Manage Captures.
3. The default filter shows everything already published on Xbox Live.
4. To see clips you’ve captured but not yet uploaded, select the filter On Xbox Live and choose On this Xbox.

Well maybe they are kept for a limited time. I would just download them to your PC.