I dislike Kryonaut, it has a nasty habit of turning out defective and scratching the base/IHS. Which you will not find out about until later.
I dislike AS5 on an AIO pump, as it dries out (normally not an issue) after @ 200 heat cycles and the micro-vibrations from a pump head will eventually cause the dried out paste to 'powder' and become useless. Figure on repaste at least yearly. It's also a mediocre paste, pretty much right in the middle of the group as far as spreading, thermals, viscosity etc.
There's only 1 good way to paste a Ryzen. Spreader/credit card/spatula style. Very thin coat covering the entire IHS. Ryzens use multiple chips, spread out towards the sides under the IHS, unlike Intel or FX which uses a single chip dead-center. So the 'pea-sized blob' method which worked perfectly for years can leave gaps at the edges/corners and that'll leave no paste above the corners of some of the chips. The X method is somewhat ok, but has a nasty habit of having too much paste near the corners, allowing for run-out which then can possibly overflow down into the socket. Seriously not good with AS5.
Personally, I'd get online and order some decent paste, there's always somebody who'll ship to your location. Noctua NT-H1, Prolimatech PK-3, Arctic MX-4, Gelid GC-Extreme are my personal preferences. One good paste job with any of those will last a good 8 years ±.