Recover Inaccessible Facebook & WhatsApp

I have two legacy accounts—one on Facebook and one on WhatsApp—that I can no longer reach because the phone number, email address, and password on record are all outdated. I still remember some clues that might help: for WhatsApp I know the linked email address and several contact numbers or names that appear in past chats, and for Facebook I can supply former associated email addresses plus a shortlist of friends who can vouch for ownership.

I need someone who understands the official recovery workflows for both Meta platforms and can steer me through each verification step—or, if you have the right professional access, handle the submission on my behalf—until I am back inside the accounts. Any solution must stay within Facebook and WhatsApp policy guidelines and may involve identity-proof steps such as government-ID upload or cross-checking with trusted contacts.

Deliverables
• Successful re-entry into both accounts OR a detailed, platform-compliant action plan that leads to recovery, clearly documenting every form, link, or support channel used.

Please let me know how you have handled similar recoveries before and roughly how long you expect each stage to take.