All instruments have the same level of difficulty to learn. It is not the instrument which is difficult to master...its music theory. Learning key registers, chords, and rhythm theory is much much harder than the instrument itself. My best advice is to start on the piano. I played piano for 8 years in order to learn the scales and key registers. Once I mastered piano, most other instruments became easier and easier to learn. Start with piano, then move to guitar.
You don’t need to start with piano. A friend of mine is really good at the guitar and he’s never played piano. If ur willing to put in the time and dedication then I definitely think u can learn it eventually.