Most students who miss their target do not have an English problem. They have a scoring problem. The PTE engine assigns marks against content, form, grammar, vocabulary, spelling, oral fluency and pronunciation — each one a separate bucket with its own rules.
Take Write Essay. If your response falls outside the 200–300 word range, the form score collapses and it drags the whole item down regardless of how good the argument is. A brilliant 320-word essay scores worse than an average 250-word one. That is not unfair, it is just mechanical.
Speaking works the same way. Oral fluency rewards a steady, even rhythm without hesitation or self-correction. Students who pause to find the perfect word lose more than students who keep moving with a simpler word. Once you know this, you stop optimising for the wrong thing.
The practical takeaway: before you study more content, audit which enabling skill is capping your score. One diagnostic mock with an honest evaluation usually answers it in an hour.