He IS being prosecuted for the fake electoral scheme. You also seem to think this country's laws actually apply equally to everybody. You obviously haven't been paying enough attention to what's been happening.
Because these things take forever to go through the courts and a major tactic Trump uses is delay delay delay. He constantly has his attorneys push for delaying any hearings. Then there are appeals which also delay, then bounce back to the other courts of various levels. It takes absolutely forever because he's rich. If it were you or I we'd be sitting in prison and having a judgment within a month.
Literally people on Jan 6th were already convicted and are out of prison. The jan 6th shaman was sentenced to 41 months in prison and was already released back in the summer... I can understand how the process take a long time, but when was trump arrested?
We all have a gigantic issue with that fact. He's wealthy and now a "politician" so he gets Special Treatment™ while the plebs get the hammer.
The plebs also had a much more obvious case of some form of "breaking and entering" while the Mafia Don sits back and can say "it wasn't me, all I said was: will someone rid me of this troublesome pence priest?"
you ever wonder why this trial is happening now, not a couple years ago?
Each trial is unique, but there are two general reasons. First, in cases of large criminal networks, it's typical to prosecute Lieutenants first and move up the chain, and that's what has happened. That maximizes the ability of prosecutors to collect information before striking at the top. Second, Trump has no real defense on these cases, so his entire strategy has been delay, delay, delay. He wants to win the presidency and make the charges go away by whatever means he can muster.