Which language is hardest to learn? Ask a better question
There is no universal hardest language. A writing system, sound contrast or grammar pattern can be unfamiliar to one learner and familiar to another. A useful comparison starts with the learner, not a dramatic ranking.
Your first language changes the distance
Related vocabulary, familiar sentence patterns and shared sounds can reduce the early learning load. Distance is directional: a language may be easier for one learner than for another.
Script is only one part
A new writing system adds an early task, but it does not decide the whole journey. Pronunciation, word formation, listening speed and access to practice may matter more over time.
Define what success means
Reading research, serving customers and chatting with family require different skills. Compare the language against the task you actually want to perform.
Count access, not only complexity
A structurally distant language can become manageable when you have frequent contact, patient speakers and material at the right level. A supposedly easy language can stall without those conditions.
Run a two-week trial
Test a beginner lesson, a short listening clip and a basic conversation routine. Notice curiosity, available support and sustainable study time before making a long commitment.