Feature request: Samsung keyboard lacks feature which are most commonly used

[rushi2000]

Gboard and Microsoft SwiftKey  feature of 1)backspace long press to delete a word 

2) long press on backspace with cursor control control with death word Preview on speak check box

3) there is no incognito keyboard mode

It this space comes to samsung bored I would love to switch to samsung keyboard please the is feature we are used to feature please it to samsung