~snip~
That is why beginners are recommended to use hardware wallets, where only a pin code is required to access the wallet (easier to remember than a password). Especially when the bitcoin wallet stores a fairly significant amount of 0.5
BTC.
If you have not saved the password and seed phrase, then no one will be able to restore access for you. This is the essence of cryptocurrencies, that all responsibility for access to the wallet and storing backups falls on you.
It is quite unfortunate that op might not be able to regain access to his Defi wallet if he does not have access to the recovery phrase. 0.5 BTC is not small at all to be lost due to unfortunate circumstances. Not having access to the wallet recovery phrases could make it difficult or impossible to recover the fund.
At least, if he can gain access to part of the recovery phrases, even not the complete phrases the probability of recovering his fund might be possible because I have seen cases where people does not have complete access to their seed recovery phrases due to one or two words missing. Even though the seed phrases are mixed or some not too visible, the probability of recovering it might be slim.
Op is a little bit confused after misplacing his wallet seed phrases. Do you think recovery could be possible without a seed phrase? Quite unfortunate!