LibreOffice is free so you can try it to make sure it works.
If you like the integration that comes with Outlook (or at least the integration as I remember it from over ten years ago) then Thunderbird is a combined email, calendar, todo app that's also free. I used it for a while when I cut the cord and went but I found its interface a bit too fussy and now I'm all-in with Apple.
BTW - I use Banktivity for my personal banking and credit cards. The basic tier is free (or maybe a one-off payment, can't remember) but if you want to connect directly to your bank and manage investments like shares and pensions then you have to pay. I find it great for managing my day to day banking. I've never used the direct-to-bank access - I just download qif files and import them. The only downside is that it's fairly US-centric, so although you can manage investments, shares, and such its coverage of UK shares and special products (e.g. investment funds in a personal pension) wasn't very good (and that's being kind) although they might have improved in the ten or more years since I just started using the basic version.
