Is it permissible to open an account with an electronic company and deposit money into it to obtain financial profit, knowing that the account holder may not be interested in it? And is it permissible to deposit money into friends' accounts for the same purpose in exchange for repayment of the deposited amount with bearing a slight loss?

The question is ambiguous, but what is understood from it is that the company gives an electronic card to anyone who opens an account, and to win prizes, a sum must be deposited to charge the card. If another person registers and charges their account through you, you get a commission. This action is not permissible because it involves deception of the company and creates a false impression of a large number of customers. The deposited money is considered a loan, and it is not permissible to benefit from its commission. If this is what is meant, then this is the answer; otherwise, the transaction must be clarified.