is non-living stuff turning into living stuff from scratch even today?

i done believes at one time on earth, there was no life. but, unlife
stuff turned into life stuff.

as of now, there is life stuff and unlife stuff. all life stuff share
same origin. but, can unlife stuff today evolve into life independent
of already existing life stuff?

suppose there are some carbon matters. can it become life on its own
regardless of life already existing?

or, is it impossible cuz whatever is created will be immediately be
destroyed by already existing life stuff? or, is it cuz of existence
of oxygen? i done heared that life cannot evolve out of unlife is
oxygen done be existing.