Yes, I think friendships change as people grow older.
Teenagers often make friends based on shared interests and spend a lot of time together at school.
Adults may have less time for friends because of work and family responsibilities.
Adult friendships are often based more on trust, understanding, and support.
Even though friendships changes, I think the present relationship is more important.

Even though friendships change, I think the current relationship is more important.

Your sentences are great! You didn't make many mistakes. Keep it up!