How to stop someone from remote accessing my iPhone 12 Pro Max. And my iPhone says all unmanaged Http and unsecured

I’ve figured out that someone is remote accessing my iPhone 12 Pro Max 512 GB, using Apple WebKit, Google firebase remote access says unmanaged and all my online accounts are being taken over and deleted including my iCloud and 2 factor authorization is on all of them. They turn off all alerts, notifications and sounds all day long and delete contacts and photos and they already deleted my original Apple ID I had for over 35 years and Apple won’t replace anything I purchased. I’ve lost over $130,000 at least. Please help! Apple can’t or won’t and it’s been going on for a year

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