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. So when I saw in electrum wallet 0.039 I panicked and started looking up.

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. But in my wallet I'm 100% positive it did not show, since I never had lower then 0.,09 or smt similar and you can see I always sent correct amount to plissio BTC adresa ending in lt


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? But then why is blockchair showing my balance as 0.039 instead of aprox 0.1…?

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