You might check out Money Manager EX. I have been using it about 10 years, after Quicken became too bloated.
MMEX allows multiple accounts, etc. It doesn’t have all the bells and whistles of the bigger programs, but is good for basic money management and multiple bank/savings accounts, etc.
And it is donationware.
http://www.moneymanagerex.org/news
It has a Linux version, and IIRC, it will import regular Quicken files.
Check it out.
Thank you.