Ever since YNABs price hike I wanted to have an alternative, but all were not really up there yet. For a few weeks, I am using ActualBudget which has been open-sourced by the developer and is actively maintained, including the „recently“ introduced support for goals :)
It‘s mooostly the same, except for the web app not yet being too mobile friendly. It works in horizontal orientation, though :) The sync via nordigen (goCardless now) also works properly.
Its basically like nYNAB when it launched, which was perfect for me. As of now, their [ynab’s] UI is getting more and more cluttered :) I can only recommend giving it a spin.