Only when you unlock all skills can you reach higher nodes. Moreover, if you make a mistake in the construction, only POE Currency can fix it. This is why the passive skill tree is daunting for all players.

It is impossible to reset the skill tree in Path of Exile. If you are over 20 and are not satisfied with your version, most players recommend that you start over.

If you are still early and don't want to make the mistake of destroying the passive skill tree, it is recommended that you choose a version for any character category you are playing. For example, Marauder built from PoE Vault comes with a complete classification of the skills you need. You can follow other players’ production guidelines to ensure that you don’t mess up the passive skill tree.

Only one situation can completely reset the "passive skill tree". If Grinding Gear Games drastically changes the skill tree between seasons, then the studio may offer players a completely free reset.

If you complete some missions in Path of Exile, you will get 20 refund points. You can also buy POE Currency to earn more refund points.

You can activate these refund points at the top of the skills, you can cancel the skills you have unlocked, provided that you need to have refund points. However, you cannot refund a skill that combines the other two skills together. If your refund points are not enough, the 15th National Congress will take the role in another direction, unless you have a lot of refund points.

In the path of exile, if you can't control the passive skill tree, it won't go well. If you want something easy and smooth, the best way is to Buy POE Currency, or you can find a suitable guide until you can make your own guide independently.