There are some limitations and conditions.
must be created before 2012
Sectors of the hard drive where the wallets were located should not be overwritten
This will cost 0.01 BTC (for every 100GB) prepayment + 1% of the amount on the restored wallets if the recovery is successful
This will take approximately 1-7 days in time.
If you want to do everything yourself and for free, I can only advise you to try to scan your target hard disks by programs for recovering deleted data.