Though uBlock Origin (uBO) blocks all ads by default, it is not an "ad blocker." It is a wide-spectrum content blocker with CPU and memory efficiency as primary features.
Additionally, you can point-and-click to block JavaScript locally or globally, create your own global or local rules to override entries from filter lists, and many more advanced features.
If you ever want to contribute something, think about the people working hard to maintain the filter lists you are using, which were made available to use by all for free.