A logical mod for Minecraft 1.16.5 and versions below which will allow you to chop down a tree with one swing of an ax. Cut down the bottom block and the tree will fall.
Falling Tree Mod for Minecraft 1.16.5/1.16.4/1.15.2
In this case, your ax will take away such an amount of strength that would be needed to cut all the blocks. This is not only much more convenient than the standard tree extraction in the game, but also much more logical. Indeed, in real life, a tree will always fall when you chop it under the base. Make the game more realistic and enjoyable for yourself.
After the tree collapses you will be able to collect all the blocks of the tree. The foliage will also fall off, but it will take a while so it makes sense to wait.
1.16.5 – Falling-Tree-Mod-1.16.5
1.16.4 – Falling-Tree-Mod-1.16.4
1.15.2 – Falling-Tree-Mod-1.15.2