My best is 40+ s or at best high 30s even when everything goes well, like when the algorithms favor me and when I don't stop to think too much. Sub-40 is extremely rare.
I know most of Fridrich's 2 look OLL and PLL algorithms and can solve the cube in average 58 to 70 moves. I do a cross at the top then turn the cube around and do the F2L with 4 sequences then OLL and PLL with 1 sequence each.
I use what I was told was a type-D cube and sometimes spray with silicone release agent but don't seem to turn like what I see in videos, not sure is it the cube or the turning but they feel different and fast!
How can I improve? Sub-20s seem ridiculously fast! I'll be happy with regular 30s or sub-30s!