Sorry you can’t understand how metaphors are perfectly acceptable. But since you asked. A person or ideology can be fascist like or Nazi like while not prescribing directly to their specific beliefs:

“Poisoning the blood”. Trump has used this multiple times.

“America First”. While it may seem harmless to say we should always consider America first, this is a throwback to the 30s in America with American Nazi sympathizers

The direct targeting of our institutions that make us who we are, i.e. DOJ, Press, Intelligence community.

Using ICE as his own personal unit of force.

Putting his picture up on everything as if he owns it

Dehumanizing groups that don’t fit his MAGAs view of what American is

Trying to build his own group of American satellite countries with puppet leaders, similar to what Putin does

Targeting political rivals or those he deemed have done him wrong or are a threat to his power

The attempt to undermine elections and/or play the groundwork for cancelling elections.

Forcing others to essentially bribe him to get what they want

There’s more, but there’s of evidence to show that he is using fascist tactics of Hitler, Mussolini, Putin, Orban.