It depends on whether you are using the Xiaomi File Manager APP or the Google Files APP to delete files on your phone.
Here are the details for your reference:
1. If you are using the Google Files APP, tap the three horizontal lines icon in the top left corner to find the [Trash] option;
2. If you are using the Xiaomi File Manager APP, there is no trash bin. It is recommended to use Xiaomi Cloud or Google Backup to regularly back up important files. We sincerely apologize for any inconvenience this issue has caused.
Note:
If you delete photos using the Xiaomi Gallery APP or the Google Photos APP, both APPs have an option for recently deleted files. In the Xiaomi Gallery APP, please tap [Albums] and select [Deleted items]. In the Google Photos APP, you can tap [Collections] and select [Trash].