The text has 76 signs. Starts with AAQ and has + sign. Also has upper and lower case and numbers and 12 charecters pass.
The "+" sounds like a signed message, but that would be 88 characters. Is there a "=" in it too somewhere?
GyW/J8h97Y4/8z9HbJEjT7ZYcq5OhrBc73m5MNle0iYPZT5yGXaSBHM+4lt/DGWrGs+swM6fHA4FaOWBTRyJVtg=
76+12=88! Coincidence?
Also what I remembered is with this text I somehow create wallet.dat file and then replace it in folder of Bitcoin core wallet.
As far as I know you can't create a wallet.dat file from text. It could be your password works on that wallet.dat, but in that case you definitely need to find the file.
Please edit your posts instead of making multiple posts in a row (see forum rules).