Countries are buying less from America for sure, especially of particular goods, but neither Mexico nor Canada nor anybody else are 'boycotting' American goods lol. I'm not in America either (so don't accuse of introverted jingoism), but I work in the international trade sector. If you're gonna use the term boycott, use it properly.
If you take exports / inflation there is a trend downward starting in 2024 [2] but 2025 is Trumps 2nd term so it's kinda been increased exports since then. Maybe at a retail level there's less demand for US but not in aggregate.
[1]: https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=M...
[2]: You have to edit graph by hand to do `a/b` after adding inflation as `b`- https://fred.stlouisfed.org/series/EXP0015