i have tried everything You advised..
I got my seed phrase from
www.Blcokchain.com.
I created the new Electrum Wallet as described, using the seed phrase from
www.Blockchain.com and, choosing the BIP39, tried the "Detect Existing Accounts" option, after that Electrum Wallet detected BIP44 Legacy Account 0 providing the evidence for transactions made under Legacy Tab in the Blockchain Wallet, transactions' amounts and dates were correct.
But NO evidence for transactions made under Segwit Tab at all, no "Unused" and "Used" Addresses..
However, my Blockchain.com Wallet is the only Wallet i could create these Addresses in, i have created them (all seven of them) at the same time (within 20 minutes) and sent to the Sender. The next day i got evidence from the Sender the transactions' Addresses and HASHes.
As i understand, since the Sender used the Addresses i sent, the Addresses cease to exist under the "Unused" Addresses Tab in my Blcokchain.com Wallet but never appeared in the "Used" Addresses Tab along with no evidence of the BTC balance.
I could never possibly imagine or create the bc1 42-digit Addresses myself and there is no other Wallet i could create them in since i have the only one Wallet.
However, if i go to
www.blockchair.com or elsewhere (Blockchain Explorer, Blockonomics, etc.,) i see the transaction history, it is "Received", "Confirmed" and "Unspent".
For example:
bc1qw7ppe93na289sp5jt3cm0w8zh9els2nld0tv7u
hash: 9f6db972726d76e387ca3e95645b3c0820c851f283b21f2cecefeffe67e489c3
This is evidence from the Sender.
What is another way to recover the BTC balance?
Thank You.