1) Digital language learning should be permanent way of learning, because it's allow us to connect with teachers all over the world, learn any languages, which you want, also, it's protect you immune system from viruses and illnesses.
2) I think, that it's impossible to overcome cultural differences, because many languages have something, that doesn't exist in other languages, so only way to explain these moments is personal dialogue.
3) I think, that teachers should give information by easier way and more interesting, so students will be interested in studying. Another way to develop self-motivation is courses of time management. But at 90% it depends on students. Only individually you can improve yourself and become more organised and motivated.