@Minicake no problem.
@Soheils the idea (as I understand it) is that the water you use for wudu is supposed to be clean. So using small pools of still water is generally looked down upon since you’re basically trying to clean yourself in your own wet dirt - this is according to the sunni, hanafi denomination. However, using running water, or pouring water onto yourself from -for example- a bucket or bottle would be fine (as I understand it).
Here’s a whole list of permitted and prohibited water types:
https://en.m.wikipedia.org/wiki/Wudu
Disclaimer: once again I’m not a scholar, just a student so take everything I say with a grain of salt.