Hi Teewest,
welcome to the Apple (user-to-user) Community!
Re: "Assistive touch malfunction: My iphone 11 keeps having issues with the assistive touch coming on randomly.
I go into settings and turn it off but it keeps coming back!
You may have set up AssistiveTouch so that a simple tap opens the AssistiveTouch menu,
More info: Use AssistiveTouch on iPhone - Apple Support
or
You may have set up (or want to try) Accessibility Shortcut to control whether AssistiveTouch is on or off.
Above linked article says:
Tip: To turn AssistiveTouch on or off quickly, you can set up Accessibility Shortcut, then triple-click a button.
Else: Wondering if this where you have been turning it off:
Go to Settings > Accessibility > Touch > AssistiveTouch. Turn off AssistiveTouch.
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Also wondering if Touch Accommodations.is on or off:
Go to Settings > Accessibility > Touch > Touch Accommodations, to see if it is Touch Accommodations that is on.
You can adjust the settings for taps, swipes, and multiple touches
More info: Adjust how iPhone responds to your touch - Apple Support
All the best :-)