I am a Reagan conservative and old enough to have been an original one. Though he did not use the term, like him, I am an "America First" patriot. From a Reagan perspective, "America First" would mean defending American national interests wherever they are threatened - whether the southern border or blunting Russian ambitions in Europe or thwarting Chinese expansion in the Pacific. A prudent national grand strategy ranks threats, interests, and opportunities based on the imperatives of geopolitics rather than abstract, vague, and unenforceable principles or worse yet, politically driven slogans. The idea that our prosperity can be assured by hiding behind a border wall or two oceans is a definition of ignorance.
What is worse is the inability of so many to separate political distaste for either Biden or Trump - yes democrats can be just as ignorant as maga republicans - from a clear-headed appraisal of our critical national interests. This sort of march of the uninformed on both sides is both dangerous and too easily galvanized by the demagogues who place personal, movement, or party interests ahead of those of the country.
I have no use for this administration, but the national interests of this country transcend political party or candidate. I think Biden's lack of action to secure our borders is just as harmful as Trump's inability to separate his personal prejudices from what is in the best interests of the nation.
These are issues which most people are unwilling or unable to actually debate. It is so much easier to make up sophomoric memes and nicknames or resort to name calling or take their ball and go home rather than to actually articulate a geopolitical policy and how it might be achieved. For instance, I am open to trying to comprehend how supporting Russian goals in Europe is an American national interests. To date that argument has been expressed as I hate "Bidet" and "demorats." Pretty much my point exactly.