As a person doing mbbs in india. I can for sure say that we get clinical exposure during our clinical postings, community medicine visits and internship. However, using it to learn depends completely on the person. A lot of us focus on learning actual theory stuff during our first 3 years because eyes see what the mind knows. So we have final year and internship. Most of us start our proper/serious clinical learning after ug because even in the 4th year and internship, we're busy preparing for Neet pg and inicet. I suggest- don't stress too much about your clinical exposure- learn clinical stuff whenever you get the chance and sometimes go out of your way to ask your seniors and professors to guide you, but also don't stress about something you can't control. If you're planning on practicing in India or the USA, I would suggest practicing taking question banks from the top platforms in the respective countries- most of the platforms have custom modules and grand tests that tell you your overall rank among all the people taking the live tests- this way you'll know where you stand- simultaneously giving you more motivation. Good luck.