There is no built-in feature to achieve this, but supporting a 'forgot my password' workaround is possible.
You could build this solution by using Airtable Automations or a third-party tool like Zapier. You would need to let users submit a request by filling out a form. And then automatically send them an email with another form allowing them to set a new password.
Alternatively, you could add instructions in the description section of the login page asking the users to email the admin (you) for help.