it seems everytime i sent the correct value to the correct adress, another transaction was also made with a much higher value? i don`t get it
You have nothing to worry about, since the second address to which a large amount is being sent is the change address that you own. Since you are using Electrum, you need to go to the "address" section and there you will see all the addresses where your coins are returned.
If we assume that the second address to receive is not a change address, then in this case the loss of the OP would not amount to $600, but many times more, since it was debited every time a transaction was made. But the OP does not write that he lost several thousand dollars.
I used electrum because I wanted to make a quick purchase using BTC and as I ce said I don't keep any BTC client installed, I'm paranoic regarding security.
I have eset firewall, router firewall no ports open and Malwarebytes.
For the transactions I used an older version of by core wallet because I had issues syncing it.
I lost every time a transaction I made , and it's always the plissio address plus another one.
The addresses with the high amount have no transactions and are not emptied, that's why I was thinking maybe is the change address somehow?
My BT core waller I closed since and did not get se it at all thinking I don't want to risk again losing something while doing a transaction.
My wallet has around 310 kb is that normal size? My 2017 wallet had like 90 kb. I keep many versions of my wallet, I loaded the 2022 wallet now, thinking all wallets are the same and it doesn't matter