Human Rights Watch has recently published the total death toll (including civilians rebels and ukrainian soldiers) which is around 6400 (lets say its 7-8000 today)
no way in hell quarter of those could be russian soldiers
Ukraine Conflict Death Toll Surpasses 6,400 Amid New Evidence Of Russian Military Involvement
if I had to tell a rough estimate it would be anywhere from 20-200 but 2000 just no way
Those figures don't include Russian deaths because they have Never given much details about casulties. If you read the article its says it is a guess and the figure is much higher.
Indeed DPR/LPR leaders has stated that the death toll is horrendouly high on both sides, far higher than the estimates.
Russian combat forces have been put at 60% according to Russians who were involved and as reported in Russian media. Local farmers etc are mainly used as guards at checkpoint and to talk to the media. The hard fighting is doen by Russian professionals of various types.
Ukrainians may have some volunteers, but no real supply of weapons and people. A limited supply of economic aid and unlimited supply of new uniforms and MRE's. Least they die with new uniforms and full bellys.
They are short of food and uniforms