yeah well that s why i m here, like i ve said i didnt keep up with wallet updates, i know the principle, i had no idea about generating multiple adresses, i knew my adress, where i received some btc from some people, and i used bt core always to buy somt, since 2022 untill 2024 i didnt buy or do anything.
Your wallet generated multiple addresses well before this year. For example, take a look at this transaction:
https://blockchair.com/bitcoin/transaction/e97619487f0319c8b199ff18300a6baf264cb3ad619f2879419d80c353b2f3a2. It uses a total of four inputs. Three from the address 1CC...ydo and one from the address 1BZ...UVz. This was back in 2022.
then this year i bought 4 games or so, when i closed the bt core , amount was right, i always check amount of wallet, because i never trust anything
yesterday i wanted to buy something, because it allowed only crypto, and since i had to resync all bt core wallet, since 2008 would ve took 12 hours ,
So, there's a bit of a problem with your story. If you were using the wallet for payments earlier this year, why did you have to resync the Core wallet all the way back to 2008 yesterday? That doesn't add up.
so i installed electrum, once i installed electrum (downloaded from their official site electrum.org), i entered my pass for default adress,
This part is really confusing. Importing a wallet from BT Core to Electrum isn't as simple as just entering a password. Plus, the password you use to unlock your BT Core wallet doesn't matter in Electrum, because they use completely different storage methods.
and shock and horror i had not even half of my btc (around 0.1 now only 0.039) so i checked blockchair of my adress , main adress i always used terminating in ydo and horror it was only 0.039.
Checking just one address on the blockchain explorer won't show you the full balance of your wallet. You need to look at all the addresses that belong to your wallet, not just one.