iOS Keyboard layout changes to default

I have been facing issues with ios keyboard layout on iPhone with iOS18 for almost 8+ months, where iphone reverts my keyboard from SwiftKey to the default keyboard. Every single time, I try to type, the phone reverts to default keyboard, for which I need to use the default keyboard to type and not useful.

This happens every time and drives me literally crazy, had almost planned to move to Google Pixel and tries to do that every moment!

I have tried all the settings including resetting and complete restore of backup to the iPhone. Did a lot of search, found there was no solution and had to find something on my ow. Happy to say that I finally found a solution!!!

Posting the solution, with hopes that it helps anyone facing the same issue.

Solution --

1. Add your third party keyboard
2. Remove English (US) or whatever default keyboard you have as iOS default.
3. Remove / uncheck / disable all the English Setting from the Keyboard page, refer the screenshot https://snipboard.io/7VIgs4.jpg
4. Wallah!! Keyboard issue is solved!!