No matter how good a fighter you are, you can't be awake at all times. You can't watch your own back. You can't supply all your own food and drink and weapons and clothing and shelter and ammo and intelligence.
You need military allies. If you start off with allies and you curse them out, tell them to obey your every whim, threaten to take their stuff, lie to them, and insult them... you will quickly lose your allies. But this is what DJT has done re: NATO, Greenland, Panama, Canada and others.
No matter how good a businessman you are, you aren't going to mine all your own ore, smelt it, grow your own food, innovate all your own technology, maintain your house, teach your kids, care for your elderly relatives, build your own car from scratch, pump & refine your own oil, and weave & sew your own clothing.
You need business partners. If you start off with business partners and lie to them, blow up your contracts and trade deals, crash your businesses, refuse to pay contractors, and demand others pay tribute to you personally for the privilege of doing business with your companies... you will quickly lose your business partners. But this is what Trump is doing with tariffs and trade wars and his long history of reneging on deals (e.g. with Iran and Ukraine as President, but also with his bankruptcies and real estate loans & contracts.)
No matter how smart you are, you can't be an expert in every field. You can't personally see every perspective on every issue. You can't personally and fairly resolve every ambiguity. You can't be a judge in every case. You can't read every law or research paper. You can't personally meet and help every person who needs support.
You need experts and intellectual allies and bureaucrats and civil servants to manage the complexities of law & science, and the myriad goals & challenges of maintaining society & government. If you start firing everyone who disagrees with your uninformed intuition, if you reject research you disagree with, if you trust people only when they place more faith in you than in facts... you will quickly make a fool of yourself and expose breathtaking incompetence & ignorance. But this is what Trump is doing with his & Musk's slash & burn approach to the federal government.
No matter how good you are at winning friends & influencing people, there will always be someone who has experiences you lack, who behaves in a way you find strange, who has different preferences from you on details of religion & beauty & art. If you want to keep your friends, your military allies, and your business partners, you need to understand that _they_ have friends, family, allies, and businesses that are important to them too.
You need compassion and empathy to forge lasting relationships and to convince people to trust you, to risk their own lives and wealth and social ties on your behalf. If you start insulting broad classes of people, demonizing everyone who isn't a clone of yourself, and openly seeking to jail, deport or kill every minority... you will quickly find those minorities banding together to stop you. You will find that your nominal allies have misgivings and will slow-roll the parts of your agenda that they most disagree with. They won't tell you about it up front - because you've made that seem dangerous - but you'll get lip service to your face and a persistent unwillingness to carry out your orders whenever they can find an excuse. But this is what Trump is doing with the culture wars & xenophobia.
He is not strong. He is weak. He undermines everyone and everything for the slightest whim. He doesn't understand what he's doing with the military, with the economy, with the government, or with social policies. Every outrage he triggers makes it more obvious to more people that standing with him is dangerous.
But he _pretends_ to be strong, and he's told many people many times that he _is_ strong. He speaks to their id, to their base desires, to their knee-jerk reactions and simplistic ideas of what a "strong man" looks like. His power is an illusion and whatever he believes he can do, he's only causing chaos & pain - for America, for the world, for the GOP, and for everyone around him.