I’ve just looked that transceiver up — Now I know why you said it was doing well!!
You may have already been made aware, but if newcomers continue to rely on the built in decoder, there’s the real possibility that it will end up being a crutch that you cannot do without. You’ll come across hams who cannot send good enough morse for a decoder to read…
Good luck. There’s plenty of good CW ops on here if you need them.
I also recommend Morse Runner on Windows, Ditto CW on Android and Ham Morse on iPhone (iOS). Practice a little and often, e.g. 10-15 minutes, three times a week. Any more and you probably won’t stick to it.