My public address was 1KkPpMarp1H9xd4XsxNpeNX1BbRv8eaVk3, it had .005 something balance. But I accidentally changed the the previous one with the new one. And I lost the balance also, when I search the address in blockchain explorer than it shows balance 0 and also my current balance is 0.
The last bitcoin transaction related to this above address was on 8th 07, 2019. And, the final balance you are having is zero (0), you do not have Bitcoin on that addre anymoress. But, possibly you are confusing it with Bitcoin Cash, you still have 0.00547629 BCH ($4.36 with the current Bitcoin Cash price at $796), so far you have been able to make transaction using the wallet, you should be to spend the Bitcoin Cash using your (the same) Blockchain.com wallet.
So, if the amount seen on your wallet is approximately $4.36, it is the amount of Bitcoin Cash you have on it, not Bitcoin (and you expecting the amount to be more because of high Bitcoin price), you have not bitcoin.
Your bitcoin transactions and final balance on blockchain explorer:
https://www.blockchain.com/btc/address/1KkPpMarp1H9xd4XsxNpeNX1BbRv8eaVk3?page=1Your bitcoin cash transactions and final balance on blockchain explorer:
https://www.blockchain.com/bch/address/1KkPpMarp1H9xd4XsxNpeNX1BbRv8eaVk3Or, you still insist your balance is 0? Or, lower than what you are expecting?