Planning on hiking with friends in norway (june)

Hello, im a newcommer in hiking but i have some experience i am planing on a hike with my friends this june, but we dont live in norway so im asking for help, i would like a hike where its beginner friendly, but not insanely easy, we are planning on staying in our tents for 2-3 days it would be great if there would be any water source were we could fish, and some beutifull views, btw we would fly into oslo, and would use public transport to move around, i think ideally it would be great if there is a trail which we can follow and theres a summit next to our camp, idk if anyone understood anything but i would be greatfull for help( sorry for the bad english) have a nice day ;)