May be this happened because of Google Link Spam Algorithm Update Rolling Out on July 26.
What to expect. Like with any Google algorithm update, your rankings may go up, may go down or may remain stable. But if you are impacted by the June 2021 core update, it is possible that the impact can reverse itself with the July 2021 core update. Below I have mentioned the link for your reference : https://searchengineland.com/google-june-2021-core-update-rolling-out-349121
