I know you stated you can't afford 1Password, but it really is an excellent application.
I have been a 1Password user for years (since version 1). The price of the stand alone version is $64.99USD so, about $90AUD.
They have been very good at providing free updates as well. They allowed all 1Password 5 users to upgrade to 1Password 6 for free, so looking at my licence, I paid for it back in 2013. I paid $35USD back then. $10 a year is pretty good value, and support is excellent.
Even if you went down the subscription route, it is $4AUD a month, so the full price of the software is not that expensive. You can also try to find coupon codes for a discount too.
I tried LastPass, but did not like having to always have an internet connection to access my passwords, and have only found 1Password to suit my needs across iOS, macOS and Windows.