You did them with no idea of what to expect? This profession is heavily geared towards prior planning and preparation.
In any case, as pilotchute said, these entry tests are not particularly difficult, they don't actually require that much prep as they are "aptitude" tests, and if you are having difficulty at this early stage you will most certainly have your work cut out for you on the CPL and IR.
If you do get that far, entry into any reputable airline will then involve further tests. These tests do not get easier the further down the line you go. Think hard if this career is actually for you. Falling at the first hurdle can sometimes be a saving grace in the long run.