Today’s world is not the same world of the 18th century. Washington’s farewell address was given as America was a country too weak and small to be involved in most European affairs.
The world has changed since then. What goes on in the rest of the world affects us more than it did then.
In any case, we were involved in foreign entanglements after Washington’s farewell address. Read about the quasi-war and the War of 1812.
The War of 1812 was fought over neutrality and impressment, and we tried to take Canada away from the British. The attempt failed when the French refused to rise (second time that happened), and the British tried to take New Orleans, and that failed.
Quite a shoving match for little gain on either side, except a decision that "we need to stop doing this."