Yup, best from cuttings. I've done a few in my time, but never bothered with seed.
I guess your still fed up with the rooted plug cutting that died. These are actually quite good, especially if you want to grow a standard, as most still have the growing tip in place.
Seeds are very variable. Cuttings are exact reproductions of the original - so you can chose you colours with certainty.
If you wait for another month or so, there will be small bushy plants available in 3.5inch pots. Perhaps you will get on better with these.
I think those that grow from seed, only do it for hybridization reasons.
( I keep my rooted plug cuttings on the windowsill until late April, when they're about 12-18 inches high. Only then do I put them outside, and still be prepared to bring them in if frost is forecast. )