Transaction details not found

Hello,

Why details of some transactions are not found? From where I can get the details of such transactions?
For example, below transactions of address are not found 7bQuvm5SipXmRSZvvwBsaGp5S3qcfcK3LxNcEEmmG7vo:
1.2c1QT1xzjSv1A5wNuCCs57gofkRmih6aPkaJxdTsHbtVDniNt1S3vF7c9DSRC6jxR2YHpgYgDqBsMBnxq8TzWNuo
2.3ACSzbm2xh9x86EijKkuvgXH5UNjqLEC55nWEG2meez4EFs4XrUPaCWtrtNHjZb7jYdE5c5ywaVuAn9BXBspgvu2
3.5taJHPZvDrMcNRizo2nZ7DEqvjHDB2Dty7jCjpixveSfQ6r3R9oHuhJEUYducwoFnoq3zK6CoaFXdEBNKXzbcA16
4.48f9GDSdChdiimj7AARVbvmmiUSfVjET7d7ppWnUNbdrNmZ8Q2cgcbN4h4dDUSrEJPxugzoB63Td9acqnzDWVHrz

I checked from explorers and API’s both,
curl --location --request POST ‘http://api.mainnet-beta.solana.com/
–header ‘Content-Type: application/json’
–data-raw ’
{
“jsonrpc”: “2.0”,
“id”: 1,
“method”: “getConfirmedTransaction”,
“params”: [
“2c1QT1xzjSv1A5wNuCCs57gofkRmih6aPkaJxdTsHbtVDniNt1S3vF7c9DSRC6jxR2YHpgYgDqBsMBnxq8TzWNuo”
]
}