i think it is just a lhasa apso..
it won’t look for a Shih tzu nor a Lhapso Apso
to myself it seems like maybe it’s a maltese mix due to the fact that they have a light coat.
I would say Lhasa apso.Shih tzu get much quicker snouts.Lhasa apso get longer snouts.
Maybe a new Shih Tzu combination Lhaso Apso’s are also usually white wine colored
Definitely seems like a Maltese mix to my advice, as others have explained.
Looks like a Maltese in my opinion.