I have put together a video lesson on how to link ideas and create flow, or cohesion, in your writing.
You can see the full 10 min lesson with explanation and examples in a short paragraph at
https://www.advancedenglishlearning....h-spot-lessons
You can see a short 3 min introduction to the lesson containing just the explanation at
https://youtu.be/KvFOsW89YBc
I hope you find this useful
Best wishes
Dr Norman