To know if Ubuntu is better than Windows or not, we should compare important points. Here is a table of Ubuntu vs. Windows 10 comparison.
|more secure 🔒
|less secure 🙅♂️
|better than Windows
|use less resources
|consumes alot of resources
|available by default on bootable USB sticks
|Reliability and Stability
|black screen of death ☠️ and blue screens 🤦🏻
|Options and Choices
|too many Linux distros, too many desktop environments, .. etc
|no choice, just one
|Prefered choice by developers
|no, there is alternatives such as LibreOffice
|available as a paid suite of programs
|no, there is alternatives such as GIMP
|available as a paid Adobe suite
Adobe suite has programs such as Photoshop, Illustrator, Premiere Pro and After Effect. Microsoft Office suite (a.k.a MS Office) has programs such as Word, PowerPoint and Excel.
After reading this comparison table, you can deduce that Ubuntu is better is almost all cases, except when you need Adobe suite or Microsoft Office suite.