iPhone Mail app on ios 13 missing functionality from ios 12

[supersophie]

Hi guys,

The ios 12 and earlier Mail app had quick access buttons on the bottom of an email comprising :
Flag
Move to Folder
Delete
Reply
Compose

As shown in this screenshot:
https://ibb.co/M58wNqJ


In ios13 these have been reduced to:
Reply
Delete

How can I get the icons back? The defaults in the new Mail app in ios 13 make email management more labour intensive.

Cheers,
S~