IMO cheap is not always 'cheap'.
I certainly want the best value I can get, but not at any price.

For me there are some 'givens' I will not compromise on.

Look at the prices of course, but also look at what you get per £
Connections/Transit times
Seating comfort
Baggage allowance
Getting to the airport
Airport Parking
Service Levels and benefits
etc.

Some people don't care about being in an airport terminal waiting for a connection for 10 hours. I do.

Think about what you want, the objective is to be satisfied happy with what you've got. Not to voice-out about how 'smart' you've been to get a flight £50 less than anyone else.

I'm quite happy to spend that extra £50 for an extra 10kg baggage. I'll even pay an extra £50 to connect within 3 hours rather than 13 hours.

Sometimes, for me, cheap is not cheap.