Yes, I do know why he failed, because he was not up to the job, he put himself and his ego before the country.
He underestimatedem the depth and breadth of the corruption, criminal self-serving, sick, fascist authoritarians who covet / fight for / protect their money, power, and CONTROL.
Look at Feinstein - hete is an old, white self-serving politician who sold her soul snd tis nationto the Chinese decades ago to become wealthy and powerful. She litetally would and did do anytjibg to hold onto that money, power, and control.
The greedy, me/party-1st, corrupt, treasonous ***** has more money than she could ever spend but still refused to let go / step down ... umtil its too late. Her fellow Democrats have been trying to get her to retire for the last few yrars because she is more cognitively impaied than Biden.
The Clintons, Pelosis, Feinsteins, Bernie Sanders, Schumer, Nadler, Biden McConnell, and many more - all rich, old, money/power/control-hungry, self/party-serving f*s who love their millions, multiple houses, perks, 2-tietrd justice system, etc.....
And they have literally done the unimaginable 'anything' to protect it and to destroy anyone who treatens it.
The most historic criminal political scandals in US history, violations of both Costutution and Rule of Law, defrauding the FISA Court, and violzting tbe Patriot Act for DECADES to illegally spy on US citizens...
Failed coup attempts by a President abd his treasonous Cabinet & weaponized US Govt agencies, ... faed criminal Impeachment attempts -' admitted _ exposed illegal, criminal attempts to overthrow the US govt by illegally removing a US President...
These traiors have literally stopped at nothing in an attempt to destroy the outsider who threatened to expose and eliminate the criminal system they created for themselves that keeps them in power, keeps them rich, keeps them above US law, and that continues to give them power and control to govern as RULERS instead of REPRESENTATIVES.
God bless Trump for trying, but he was naive and stupid. He waded i to Washington intent on 'burning it down', waded into a snake pit without realizing he was surrounded by snakes he sought to take down and who wanted to take him down.
He was way in over his head, had no idea who to trust, trusted DC advisors (more snakes who counted themselves among those he intended to destroy), was , of course - betrayed, and still somehow managed to survive the thousands of 'bites' he got every single day.
EVERY DAY was a fight against all the snakes whose hole he had climbed into with the intent of draining the swamp and getting rid of.
Trump successfully exposed a lot of crime, corruption, sedition, treason, etc... in government and the media; however, exposing it and getting rid of it are 2 very different things.
Again, he was naive, DC politically inexperienced, and overmatched / outnumbered before he ever took office. They tried to destroy him before he ever took office and have been continuing to try to do so for 6 and a half years to do so because he is still a threat.
He still, it seems, does not realize that even if he does win the Presidency he still faces the same thing, the same enemies, and he does not stand a chance of success unless he can get all the partisan traitors out of the DOJ, FBI, CIA, DHS, and other agencies, have the GOP control Congress, and find / appoint his own trustworthy people in all those positions currently filled by self / party-serving criminals and traitors.
Thst's a helluva lot to get done just so Trump can have a chance of getting in office again and to complete what he set out to do.
Personaly I don't think he has a snowball's chance in hell.
Our government is too f*ed up, too far gone - we are politically, judicially, governmentally too far down the road to solidifying our position as a corrupt, authoritarian 3rd World Nation ... IMHO.