Is there any way to check my iPhone to make sure it’s not hacked ?

If you haven't jailbroken your iPhone, it's not possible.

Check ⤵️ 

See who has access to your device or accounts

See who has access to your device or accounts – Apple Support (UK)

If you think your Apple ID has been compromised

If you think your Apple ID has been compromised - Apple Support

See also ->  Share your screen in FaceTime on your iPhone or iPad

Share your screen in FaceTime on your iPhone or iPad - Apple Support

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Everyone can see what's on your screen until you stop sharing, but they can't control anything on your device.

What makes you think your iPhone is hacked? iPhones are not easy to hack, if your phone is not jailbroken and you have not given someone physical access to your phone it is almost impossible