Hello PeedgeHere and welcome to Apple Support Communities.
It appears you are having some difficulty with the front-facing camera on your iPhone when using a couple of different 3rd party apps.
The first thing you'll need to do is isolate this. Do you have the same issues when using the front-facing camera in a native iOS app such as Camera or FaceTime?
If these apps work as expected and the issue is isolated to 3rd-party apps, start by making sure the apps are up-to-date. If they are already updated or if an update does not resolve the issue, consider removing the apps from your device and reinstalling them.
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If the behavior continues, you'll want to work directly with the support teams for the apps that are exhibiting this behavior.
How to contact an app developer
Cheers.