And I’m positive I’m wasting my time responding to you. here’s a little lesson on what tax returns can tell you.
If Trump personally had any loans from Russian banks or entities, the amount of interest paid, would likely be disclosed on his tax return. If he had any investments in Russian businesses Entities who paid him directly dividends or interest that would likely be disclosed on his personal tax returns. It’s highly unlikely that he would do any such transactions in his personal name and so far I have not heard any reports of any such disclosures in the release tax returns.
Most likely all his dealings with Russia, or most any other country would have been through entities he either wholly or partially owns. All that shows up in his personal tax returns is the amount of income and distributions he receives from such entities. Having the names of those entities, and K-1 information would enable a forensic financial analyst to trace ownership and nature of business. I suspect that analysis is going on in multiple places right now.

Having said all that, I have to ask you why you think my earlier conjecture is somehow I gotcha.