You must have seen the use of shape transitions in many professional videos. You can create the similar transition effects using Shotcut!
In this Shotcut tutorial learn these 3 stylish shape transitions: #1 Vertical slide transition, #2 Diagonal slide transition, and #3 Circle transition. These are quite simple transitions to create and look very professional.
Video Footage Credits: https://mixkit.co/
Music: https://www.bensound.com