Native speaker
In Emirati Arabic, “I don't want…” is مابي (maa bee).
مابي
I don't want…
It's in the phrasebook under Yes, no & everyday basics, with 90 more like it.
abee
khatar
sah
mumkin
mitaa?
laa
Source: DLIFLC Emirati Basic Language Survival Kit (2007). Credits and licences