L1A to H1B conversion

I am in L1A and don’t have perm or I140… 6th year in US will end at sep 2022… My employer didn’t file my GC in EB1.

If I apply H1B this year and picked in lottery - can I continue stay till 7th year… stay outside of US for additional one year to reset the time clock and use lot for H1B stamping…

Reason - if I need to use my H1B lot this year then I won’t apply