Russia has been indiscriminately bombing civilians and civilian and humanitarian infrastructure since day 1 of invasion. There are mountains, and mountains of evidence.
Amnesty International (Feb 25, first days if the war): https://www.amnesty.org/en/latest/news/2022/02/russian-milit...
"UN rights office says it has credible reports of Russian cluster bomb use in Ukraine", (March 11): https://www.reuters.com/world/un-rights-office-has-credible-...