Okay, let's go over each point one by one.
1. Nationalism is a good thing.
Nationalism is a trope invented for a purpose. It can be abused. (Like when you do free trade deals with Mexicon and India, and then claim you are still nationalist. (How this works: Companies will export steps in manufacturing to lower wage countries, then reimport those partly manufactured goods, for final assembly in country, maybe. This results in less, and lower qualification jobs in the US. At the same times, goods get cheaper, and might also be sold to India. Which also doesnt benefit the manufacturing base in the US.))
2. Human rights don't exist.
They do - but US claims extralegal status basically (claims those courts dont have legislative power over stuff done by the US, or hasnt signed agreements). All that stuff is likely to continue (partly because of the US playing protector and hegemon at the same time)
3. Labeling your group "anti-bad" doesn't instantly make it the hero group.
Same goes for you, so I think we can agree on that.
4. A stronger military keeps innocent people safe.
Thats a naive world view.
The only programmatic ('this is what I want to change') points you could come up with were:
"Have no Arsonists swarm the city." (Protesters)
"Mail-in Vote is the real fraud, lets not have Mail-in voting"
Lets face it, you've become a fashist.
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Oh, the Trump is anti-labour rights point has to be illustrated as well. Lets take a Tump campaign ad for that.
If you get bamboozled by words: Manufacturing will go to india and mexico, or get to an equally low pay level (partly because of deregulation (no social security for those workers, ...)) to compete.
Free trade means international Investor protection programs (if investor invests money in India he/she gets guarantees, that they arent booted before they have recouped investments, or they get compensations) - its not like india would have had high import tariffs on american goods before. That and that standards get aligned, so manufacturers have lower expenses getting products market ready.
In the conventional economic model, this helps everyone, because as products become cheaper, more people can afford it, which profits the manufacturer - and therefore their workforce. But the money doesnt end up in US workforces anymore - its india that gets developed.
What you'd need in developed countries are investments in R&D and new industries, that only would be viable in the US, for one reason or another (and cheap energy is one reason (a republican one, but hey)).
Trump didnt invest in education, companies didn't invest in R&D (for what? Just slash prices, then sell to india.)