The bias and narrative is definitely pro-Ukrainian, but the facts are well documented. There's a massive OSINT effort around this war. There's a Dutch group called Oryx specifically tracking material deployment and destruction [1]. That data is also scraped and put into a visual format by a guy on GitHub [2].

[1]: https://www.oryxspioenkop.com

[2]: https://github.com/favstats/uaconflict_equipmentloss