I don't want to sound rude, but maybe you should try to relax, or if it gets bad, therapy.

Yes, there is a chance someone will create some deepfake porn of you. And guess what, it doesn't have to be man :)

No, there isn't any way to prevent this, other than not having photos/videos/audio of you available at all.

Yes, the implications are insane... But not in a way you think they are.

Nothing will be trustworthy anymore. The politics would turn into much bigger shitshow than it is now. The news reporting will be plagued by fakes. But everyone's privacy will be much better than before.

Your ex leaked your nudes? Nobody will be able to say if they are legit, or if it's just a deepfake. A video of you jerking off got online, because you forgot to put a tape over camera? Surely that must be a deepfake. Audio of you drunkely confessing to infidelity? Deepfake.

If someone digitally stitches your face onto someone else's body in a porn movie... Why should you even care? There's no reason to worry.