How to painlessly replace one Linux distribution with another?

Question

linux

Good afternoon.
I have a Lenovo G50 laptop running Windows 7 alongside Ubuntu. However, this is a kind of UALinux Ubuntu distribution ( https://ualinux.com/en/) , in which everything is distorted to the point of horror, and not familiar. Tell me, is it possible to painlessly replace this distribution with a normal Ubuntu, without damaging anything extra. Thanks in advance.

Answer 1

What do you mean by "extra"?
The easiest option is to save ~ your user and install everything from scratch, and then put the ~ in place.

Answer 2

Yes, just install in the same partition.