No. They are not true. There are neutral observers, also funded by the West, who report the truth.
For example, Mediazona:
https://en.zona.media/article/2022/05/20/casualties_eng-trl
They report only 84,000 Russian soldiers have died.
Then there is the Levada Research Center, which is funded by the American CIA-sponsored NED (National Endowment for Democracy) and which reports that conditions in Russia are very positive and the people support both Putin and the war.
https://www.levada.ru/en/ratings/approval-of-the-authorities/
https://www.levada.ru/en/2022/04/11/the-conflict-with-ukraine/
Then there is just the inevitable "outing" of the truth.
Take Bucha for example. This was a 100% staged event that was created by Ukraine and MI6 in order to distract the West from the fact that a peace agreement had been negotiated between Ukraine and Russia in Istanbul.
The truth about Bucha has recently been exposed in a public trial of a Czech Mercenary who fought with the Ukrainian neo-Nazi Sich Battalion in Bucha. The Ukrainian staged the "massacre".