@Fairbs2380 – always amusing to see a first time poster make such a hash of it. Plenty of flights before 7.30.
I believe the point the OP was making was that at that time of day when trains are every 30 mins you should be able to rely on them. Probably a toss up between Uber and waiting 30 mins for the next service – I guess it depends on flight time. If flying from North terminal you also need the shuttle and it can get tight on the train.