Hi FalconicKatadora,
Thanks for using Apple Support Communities. It sounds like you're referring to inline text predictions. This is an iOS 17 feature that can be disabled by turning off predictive text. The following sections of Use predictive text on iPhone have further details.
"Apply inline text predictions
As you type, predictions that complete the word or phrase you’re typing appear inline in gray text. Tap the Space bar to accept the prediction for the word or phrase; keep typing to reject it.
If you accept an inline prediction and then change your mind, tap, then tap the word you were in the process of typing.
Note: Inline predictive text may not be supported in your language. See iOS and iPadOS Feature Availability."
"Turn off predictive text
- While using the keyboard, touch and hold or .
- Tap Keyboard Settings, then turn off Predictive.
When you turn off Predictive, iPhone may still try to suggest corrections for misspelled words. To accept a correction, enter a space or punctuation, or tap Return. To reject a correction, tap the “x.” If you reject the same suggestion a few times, iPhone stops suggesting it."
Take care.