IMHO, any saw is pure evil, because almost every solo-use saw will drastically limit your survival capabilities by simply limiting the size of wood you might just consider using in your mind.

For example, it's weird for me to see survival experiments videos on YouTube, when after dunking in the ice cold water people (under the wise guidance of survival instructor) are making fire out of just 3-4 inch "logs" maximum (some were feeding their miniature "survival" fire by kindling only!), and that's for fighting the really deadly hypothermia overnight... That's so silly! I'm used to creating at least a three-log fire in such a situation with 12 inch logs minimum! Find just 1 dead tree and chop it down to pieces. Same apply for the shelter building, animal snares making, water distilling, etc.

You need more wood - find and cut a large tree. I understand, - firewood gathering prohibition, fire bans, etc... but keep that in mind when you need to survive for real.