> I don't really have any idea if tariffs are good or bad.

tariffs are objectively* bad from a "big picture" perspective.

There are some situations where they create winners and losers so that some people in some countries will win, but they always do more damage than good "overall"(or in aggregate across all parties).

A link to the math behind it: https://en.wikipedia.org/wiki/Deadweight_loss

*in almost all cases... For certain goods where you actually want to lower consumption such as cigarettes, then maybe arguably they are good? Same argument as for https://en.wikipedia.org/wiki/Pigouvian_tax