The world’s best male and female starters (Powell and Fraser) have their feet high up in the blocks. Nevertheless, in this case the blocks are too small to place the feet that high. I would say that at least half of the sole of your feet should be in contact with the blocks.
For unlimited, your blocks are way too far back. Your back leg is almost completely straight in the set position, which is why you have to rock back to get any sort of power generated out of the blocks. The knee angle of your back leg should be around 130 degrees in the set position.
When you’re in your upright running position, you are leaning back and your shoulders are pulled up (can’t see your neck), which is a sign of excessive tightness.
Timing you from first movement on the last run, I get about 5.2s, which would probably equate to about 5.5-5.7s electric. Assuming that this is actually 40m, you’re in about 12.0-12.5s 100m shape.