There are different padlocks to open.
A directional one : Move to several directions and if you have the right combinaison, you will be able to open it. If you’ve made a mistake , to reinitialize, click twice the padlock handle.
There is also a peculiar one. Indeed, if you gave the right code, it won’t open. To open it, first have the right code then press the metal part to unlock the handle.
There are classic padlocks with figures. For example, if you have 3 figures out of 4, it will be easy to open it. Please, try to find the last figure because, first, it’s funnier and then, finding the last one, you will perhaps have a clue for the continuation of your mission