13 years ago I bought Bitcoin through a broker and he created a wallet for me on Bitcoin Core and sent me Bitcoins. For years I have been trying to enter the wallet and it tells me
Wallet loaded successfully. The legacy wallet type is being deprecated and support for creating and opening legacy wallets will be removed in the future. Legacy wallets can be migrated to a descriptor wallet with migratewallet.
When I choose to transfer to the migratewallet, it tells me to enter the password, and I forgot this password and I have the entire file wallet dat How can I access the wallet and recover the password? Can you help me?
One thing that that might help you. Old bitcoin core wallets did not required passwords at beginning and many people latter added password after they have funded wallet or just decided that they want it secure. But if you would recover wallet.dat file from old backup somewhere from time when you had no password set up than you could access all funds on main wallets even if you encrypted it afterwards.

good luck.