Okay, so basically you’ve read some “anonymous sources” and decided they are true.
Because for me, as a person who did international business from Ukraine it makes absolutely zero sense to launder through Ukraine as it is:
1) no part of any union, so you will be unable to spend or move money outside.
2) it has extreme bank regulation, and you cannot just send money outside without cause. Receiving and sending money for fake “services” will not work (compared to a lot of other places I know)
3) it has a lot of independent anti-corruption institutions. You can be sure that any government official fears the consequences of doing something illegal.
4) it is in a state of war and any suspicious money operation will trigger investigation from SBU as well, since Russia tries to pay for its agents.
If there is corruption and money laundering happening, it is well outside of any path available for regular people.