I had my two bottom wisdom teeth removed and both had 4 curly roots, i thought wisdom teeth only had 2 roots.

Bottom wisdom teeth: Bottom ones typically have two but there is variation since it may have much more smaller roots/divisions like up to 8.

Wisdom teeth: It is typical for lower wisdom teeth to have 2 roots, however there variation of root structure. They can be straight, curved and the number may be three, four or more. Most important for you is to follow your post op instruction.

Many possibilities..: Each molar tooth can be slightly different. Some have one root, others multiple roots. It really all depends on the genetics of their formation.

Most: Most upper wisdom teeth have 3 roots, lower 2. But of all the teeth in the mouth the most anomalous are the 3rd molars, so anything goes.