Recover Data from Stuck Xiaomi

My Xiaomi A3 has suddenly stopped booting; as soon as I power it on I’m met with the “Android system cannot load” screen that only offers “Try again” or “Factory data reset.” Because I never set up a Google, computer, or SD-card backup, everything that matters—photos, contacts, notes, and WhatsApp media—lives only in the phone’s internal storage.

The error shows up before any lock screen, so I can’t reach the home screen to pull the data out myself. I need a specialist who can extract the contents of the internal memory without triggering a factory reset. Whether you prefer ADB sideload, EDL mode, custom recovery (TWRP), or another forensic-style technique, I’m open to the safest method that will leave the data intact.

Deliverable
• A complete copy of my user data (at minimum the DCIM, Downloads, Documents, and WhatsApp folders) delivered via cloud link or archive, plus any instructions I should follow for future restoration.
PLEASE MAKE SURE YOU CAN RECOVER ALL DATA ESPECIALLY PHOTOS FULLY. I HAVE A BACKUP OF CONTACTS MOSTLY. THATS IT...
If the job can be done remotely, great—just guide me through the exact commands, drivers, and tools required. If it truly demands hands-on work, let me know the procedure and estimated turnaround so we can arrange shipping. All I care about is getting my data back safely.
IF YOU ARE IN THE KOLKATA AREA PLEASE LET ME KNOW I WOULD PREFER IN PERSON WORK YOU CAN DO IT IN MY OFFICE OR AT MY HOME ADDRESS.