> I'm not an economist.
That much is clear.
This can kind of be the case with narrow, directed tariffs (protectionism of a vulnerable uncompetitive industry, for instance see https://en.wikipedia.org/wiki/Chicken_tax), or in a developing country that has mostly primary industry (that is extractive industry, mining and that sort of thing). In a developed country, it’s a lot more complicated; a lot of that manufacturing probably depends on imported materials or parts (so tariffs hurt it from that direction) and a lot of the market is probably export (which tariffs also hit, for tariffs more or less inevitably lead to retaliatory tariffs).
And where you have heavy protectionism, the _consumer_ tends to suffer, as the protected industries have little incentive to make their products good or cheap. See British Leyland; for quite a while the British government attempted to keep it alive by heavily restricting the import of actually good cars. Spoiler: it did not work.