For the average gym goer, even if you have been going to the gym for years there is often little need to train using elaborate split routines, isolation training, elaborate functional training let alone to ‘confuse’ the muscles. So if you want to get faster, then train to run faster. If you want to be able to run 10km then gradually run further each session until you can run 10+km. If you want to increase your flat bench strength then concentrate on lifting more on your flat bench rather than going mad lifting different bench press variations plus assistance/isolation movements. If you want to add mass then do the big movements, (squat, press, pull, deadlift) instead of trying to isolate each individual muscle head on, each individual muscle.
Also, do not think that you have to use every piece of equipment in the gym every week, let alone every session. Quantity is not better than quality so you need perhaps 6-7 different exercises per session, maximum.
The final part of this is people incorrectly assessing their experience level, which leads them to overly complicate their training, when simple, but well executed training is all that is required. This is often due to magazines and websites pushing the latest workout out trend and people copying them. These magazines and websites are only interested in selling you their products, and their advertisers products and have no interest in helping you get fitter. Keep it simple.