You already know how to fix a single flaky test. This lecture is about the situation you will inherit: a suite where forty tests fail at random and everyone has given up.
You cannot debug forty tests one by one. You need a different approach.
Step 1: measure before you fix anything. You need to know which tests fail, how often, and whether it is getting better. Cypress Cloud does this for you, or you can save your test results to a file and count failures per test over a week.
Do not skip this. Without numbers, "the suite is flaky" is a feeling, and you cannot show progress to a manager who is asking why testing takes so long.