To some extent you could be screwed unless you get the right password to the wallet.
Another question is, did you write down the seed phrase somewhere? That kind of wallet back up could be a big savior to you right now.
OP is screwed to be honest, OP did an update that there is no back up so OP is doomed. The only thing that OP can do is try to access the password manager that OP is using, that might have some residual information because AFAIK, password manager can be accessed cross devices and even when the device got rebooted.
This is why I hate password managers, you do not exactly know what your password is, plus the password generator that some offer is very anti user because in the case that you need an access without the manager, you can't because you did not create the password yourself.