Hey there Urologo,
Thanks for reaching out to Apple Support Communities. We're happy to provide some assistance.
You can change the default option from Archive to Trash by following the actions under the "Set Trash or Archive as your default option" section here:
Delete emails on your iPhone or iPad - Apple Support
"Set Trash or Archive as your default option
Depending on the type of email account you have, you might see Archive instead of Trash when you try to delete emails. You can edit where your deleted messages go in your Mail settings:
- In the Settings app, tap Mail.
- Tap Accounts.
- Tap your account.
- Tap your account once more.
- Tap Advanced.
- Select Deleted Mailbox or Archive Mailbox to send discarded messages there."
Have a great day!