The majority of the very old records that still exist are those that have been carved in stone or bronze, or pressed in burned ceramic.
Besides these, there have been huge amounts of written records that have used more perishable materials, like plant leaves, plant bark, wood, papyrus, wax etc.
Almost all of those have been lost.
In the past, carving stone or bronze was hard work, so it was avoided, except for the most important records. Also today, there are technologies to make digital records that could survive for many millennia, but due to their high cost they are used even less than stone carving was used in the ancient world.
Besides these, there have been huge amounts of written records that have used more perishable materials, like plant leaves, plant bark, wood, papyrus, wax etc.
Almost all of those have been lost.
In the past, carving stone or bronze was hard work, so it was avoided, except for the most important records. Also today, there are technologies to make digital records that could survive for many millennia, but due to their high cost they are used even less than stone carving was used in the ancient world.