Custodial wallet pear to pear
There is only Peer-to-Peer (P2P) trades, not Pear to Pear.
like sending from electron wallet to electron wallet
It's not a nuclear related activity so no Electron wallet and there is only Electrum wallet.
My question now is that to be on a safer side which wallet is best needed for me to send him for transaction that can not be traced even though I am not sure if it's from a scam wallet or not.
Bitcoin blockchain is a public blockchain with a public ledger and everyone can trace any Bitcoin transaction with related UTXOs and transactions from the past to present and the future.
You must use your Bitcoin UTXOs very carefully in order to have good privacy and anonymity, but it also relates to whether you run a Bitcoin full node, with or without Tor and use your node for broadcasting your Bitcoin transaction.
Security and Privacy guides.
https://bitcoiner.guide/privacy/https://www.lopp.net/bitcoin-information/security.htmlhttps://www.lopp.net/bitcoin-information/privacy.html