If never used clutch need to practice first, if mot susah

That's a sweet bike. Well if we're going to consider that area, then there's also the Zontes 300cc singles. I particularly like the ADV version.

Unfortunately, these are all closer to RM20k.

And if we're willing to consider the 250cc class, then the TRK251, CSC RX3 and Leoncino 250 are all definitely within our budget.

Japanese 250cc bikes... forget it... unless second hand, then maybe.
Bottom line... Dominar D400 remains the only option to get that many CCs in a triple spark KTM-based engine at RM13k OTR, if you fancy a tight, virgin bike whose seat is still unsullied by other men's sweaty crotch.