Hi! I'm happy you loved the game! Thank you for playing!! ^^ And your English is fine!
- Spoilers-
It is not possible to go back to True Love after Chara takes your SOUL. Chara will force you to betray Sans every time.
If you want to delete your game to download a new one and play again, here's instructions on how to do that: https://itch.io/post/2792964