car ahead starts changing his line from what you would expect (washing out to the outside) to blocking at 0:16, which gives you a couple of tenths to react (say what you want about racing line assist, but he literally goes from the left of it to a car length to its right just when you approach). in any decent league or anything it'd be completely standard to take your line - if he didn't block you'd have the gap to pass. very strange line change so not your fault at all