Unjailbreak iPhone 6s Plus “CYDIA REMOVAL”

Previously installed Cydia jail breaking my iPhone 6s Plus. Since experiencing several issues made several attempts removing app which now seems to be imbedded On my iOS 11.4.1 impeding any further updates. Looking for suggestions how to successfully remove the software so I can factory reset. Enjoyed the Tweaks as an iUser would be thankful if anyone has other reputable sources to give so I can get back to luxuary app life, thank you✊
 
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DelJo63

If your iCloud was loaded with a backup, you *might* be able to restore from there