I`d say you have both issues. The nozzle may not be fully unclogged, search this forum for "Atomic method". Also, that large chunk missing looks like the feeder skipping again. Make sure the grub screws on the feeder are nice n tight too.
As for the curling of the filament when it comes out of the nozzle, yeah this happens quite often. The trick I think is to make sure the end of the nozzle is nice n clean, when I know my nozzle is nice and hot, just before a print starts, I often wipe the nozzle with a bit of kitchen paper....careful its obviously hot.. but it keeps it nice and clean. I always watch the start of a print too, because 99% of the time you know if a print will be successful or not by observing the first few layers. If I see this curling of the filament like in your video, I grab it with my fingers and gently work it away from the nozzle before the print starts.
Hi you should probably clean you nozzle with the atomic method (that you can find here on the forum)
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