OS? What undelete capabilities are there (eg windows recycle bin)?
Failing that, restore from a backup.
If you don't have a backup, you can recover data for tables for which there are .ibd files eg https://www.nullalo.com/en/recover-mysql-innodb-tables-without-ibdata1-file/
However you recover, now you know to do regular backups at short enough intervals to avoid losing data you can't afford to lose.