I'm sure just because i remember i made no other BTC purchases beside the amount of the transactions i already found, then no need to investigate further.

I've found the transactions by entering btc address, now i'm sure my wallet is empty. I bought 0,04 BTC for 20$ in 2016, if i kept i had 2000 bucks now  
Likely, the seed phrase leads to a different wallet, as said.

Thanks.
 

I've read many topics about similar issue, nothing seems to apply...
I stored a small amount of mBTC on a wallet on 2016, i'm sure i spended a part of them, but there must have been at least a few residual and at least 1 transaction.
I'm not 100% sure what software i used, but must have been Electrum, so i installed Electrum and restored from seed selecting "standard wallet" and entering the seed phrase (12 words), the result is completely blank (no balance, no history).
Since i have the btc address of that wallet, i also tried importing it to create a read only wallet, but the result is the same.
Beside that previous approach on 2016, i'm completely newbie, then forgive me if my request seems naive...

any idea?