last month I reset my iPhone, then I downloaded whatsApp again and used the backup on my iCloud to restore the last messages, if I delete my iCloud, will my whatsApp be reset too? because my whatsApp data is synced to iCloud

Hello alyaziizaa,

Welcome to Apple Support Communities. We understand that you want to know if you delete WhatsApp backup from iCloud if it will delete the current content in WhatsApp. We’re happy to help.

If you delete the WhatsApp backups from iCloud, it shouldn’t delete the current content in WhatsApp. Therefore, should you want to restore previous WhatsApp content, then that content will no longer be there. Here’s more information on WhatsApp backup: Back Up or Restore Chats | WhatsApp Help Center

For additional questions, we recommend contacting WhatsApp for support.

These steps may help. Please let us know if you have further questions.

Take care.