The importers have historically erred towards being something the user writes on their own. But there's also some powerful helper tools for importing but they carry a different user experience than the other tool for financial reports & visualization.
Im starting to think a unified experience (think vscode + built-in extensions) for it all might help align intentions and broaden the userbase of plaintext accounting.
1. Login not on mobile (and also extend your browser winder size until the mobile mode is gone. Mobile mode changes how you login, because of course it does...)
2. Click one your bank accounts.
3. Click "Download", "Custom date range", from some time ago to today*.
4. Download as Printable Text Format
This will give you a simple CSV file of all your transactions.
I'm horrible with money, but still try to export all my transactions and merge them onto one spreadsheet so I can plan out money stuff as needed.
* You can only download up to 6 months at a time, but you can go pretty far back in your banking history.