Yes, look at the data. Forbes states (and they got their sources from the bureau also)
"In the last 30 months of President Obama’s term, manufacturing employment grew by 185,000 or 1.5%. In President Trump’s first 30 months, manufacturers added 499,000 jobs, expanding by 4.0%. In the same 30-month time span during the mature, post-recovery phase of the business cycle, some 314,000 more manufacturing jobs were added under Trump than under Obama, a 170% advantage..."
In Trump's First 30 Months, Manufacturing Up By 314,000 Jobs Over Obama; Which States Are Hot?
So when you look at that little map, you see that from 2016 to at least 2019, Ohio got anywhere from 2.5-6.4% increase according to the legend (From the bureau of labor).
Your premise was "Trump broke his promise about bringing back manufacturing". You used Ohio as an example.
Your premise has been completely defeated in light of these facts.
Anything else you bring up is completely irrelevant and strawman. No promise was broken, no man can predict the future of catastrophes, and manufacturing went up (4% to Obamas 1.5% in 30 month time span). And the good part is, Ohio saw at the very least 2.5%, and at most 6.4%.
And please stop trying to say the virus is Trumps fault. Did he create the virus? Did he ship it around the world?
Lets be honest and fair about this. In the words of Biden "C'mon man!". The only reason there is job loss is due to an economy shutdown/restrictions. Otherwise, there would have been another year of growth in the manufacturing dept.
Manufacturing, before the virus and shutdowns, estimated there to be growth and predicted growth. They expected growth to be "2.4% in 2020".
US Manufacturing Growth and Outlook in 2020 and Beyond - TERRA Staffing Group
These articles and sources prove that Trump kept his promise to bring manufacturing back.
Again, your premise "Trump’s broken 2016 promises to factory workers" is utterly defeated.