Please check my sentences gramatically(12.9 - 1)

I've got some medicine from the Pharmacy. I love to eat meat for breakfast. However, I have breakfast with fruits or sweet potato because I have to work out in the morning. Before exercising, if I eat heavym my stomach might get into trouble. When I skip breakfast, I feel very hungry with no energy. I tried to get a job, I made a simulated job interview group. He looked like he was making a fense(/friends) to the members including me. After I got the job, I had opportunities that I got to hang out with him. I thinkI have misunderstood him. He seemed arrogant but actually a reserved person. He turned out to have some things in common with me. We ddn't enjoy our time to have dinner or even drink beer like before. I missed the things that we used to do. I do regret that I misunderstood him. If I didn't have anything prejudice towards him, I could've enjoyed more time with him. I never have had any misunderstandings towards my parents. We got many chances to have a conversation with each other.