Hi asrao0204,
welcome to the Apple (user-to-user) Community!
Re: Spoken Content on iPhone turning on automatically.
Wondering where you are turning off Spoken content, as it seems it is only off temporarily.
Try checking in Settings> Accessibility > Spoken Content ... check what features are turned on, and turn them off.
or
If you have Voice Over turned on:
To turn VoiceOver on or off, do any of the following:
Siri: Say something like: “Turn on VoiceOver” or “Turn off VoiceOver.” Learn how to use Siri.
(Above info. is from the article: Turn on and practice VoiceOver on iPhone - Apple Support )
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If needed: You may want to try restarting your iPhone (deletes temporary files, re-establishes connections, may update recent setting changes, often restores order if something is not working as expected.
If needed: How to: Restart your iPhone - Apple Support
All the best :-)