If you're up to investing time in GnuCash, and tuning it to your needs, there's some nice UI/HCI details, though some is still rough.

But the GnuCash out-of-box UX definitely isn't contemporary tech industry polish nor style. (Though that heritage also means that GnuCash isn't selling out the user a dozen different ways like we tend to do in tech industry right now.)

(Examples of tuning GnuCash: I replaced the default account hierarchy with one I evolved, switched to displaying only leaf account names instead of the colon path ones, and color-coded the accounts to distinguish liquid/non-liquid/liabilities/receivables.)

Maybe https://skrooge.org/ perhaps?

There's also a big list of alternatives to GnuCash at https://alternativeto.net/software/gnucash/ which you can filter down by various tags (open source or not, operating system, etc).

I built uFincs (https://ufincs.com) basically because I got fed up with GnuCash's UX. It only supports importing CSVs right now, but I'm open to adding other formats. It's also a web app rather than a desktop app, but you're free try it out/use it without an account (https://ufincs.com/noaccount) and all of your data will just be kept in your browser.

GnuCash's UX is great.