well idk the movie (imo) showcases orks and goblins as superior. they are stronger, more organised, outnumbering and just overrun the humans in most places. and they seem to also withstand sword strikes sometimes
Nope.
Orcs are generally worse then humans in every aspect, except they breed fast.
Uruk-hai are bigger and stronger
Goblins.. I don't recall them mentioned specifically in LOTR or Sillmarillion at all, but if they are, they would be lower than orcs.
IIRC 'goblin' is just an occasional byword for orc in Tolkien's works. The Peter Jackson movies did distinguish between goblins and orcs, but that was just Peter Jackson taking some creative liberties. OTOH, Tolkien's work does make a point of saying that there's multiple strains of orcs. Even aside from the uruk-hai (which IIRC not only refers to Saruman's strain of orcs but also to the black orcs bred at Minas Morgul), it's also stated that the orcs of Mordor are significantly tougher and more disciplined than those of Moria or the orc tribes of the wilderness. So what Peter Jackson did here wasn't *that* much of a departure with the lore.
And you're right about Tolkien's orcs being inferior to humans across the board. As you say, their one advantage is that they breed faster than anything else. They're grade-A cannonfodder. But this
is a strategic advantage because it allowed Morgoth and Sauron to recover from losses much faster than anyone else.
That's also the only reason why Sauron's orc armies were a serious threat - they lost battles but won wars simply through attrition. But even then, Sauron's armies included lots of humans as well. The Haradrim and Easterlings were reliable heavy hitters, which is also exactly why the siege of Minas Tirith was left to a Haradrim army instead of a regular orc army.