Trump made NATO members fulfill their monetary obligations which made NATO stronger against Russia . Trump put sanctions on the company building NordStream2 pipeline which kept Russia from selling more natural gas.
Trump did nothing to benefit Russia. Your last sentence is total crap.
Biden, on the other hand, removed the NordStream2 sanctions.
Hillary gave uranium mining to a Russian company and Bill Clinton received $500k for a speech in Moscow.
If anyone sold out to the Russians, it’s democrats.