guide
Forza Horizon 5: learn one corner before buying more horsepower
Keep the car familiar, use assists deliberately, and separate braking from turning. A repeatable route makes it easier to see what your driving needs next.

A faster car is an attractive answer to a slow race. It is also an easy way to arrive at the same corner with less time to think. If every attempt ends with the front wheels pointed at the outside wall, adding power has not answered the useful question: what happened between approaching the bend and asking the tires to turn?
Forza Horizon 5 gives you enough room to investigate that question without making every drive an exam. Choose a car you can handle, a road event you can repeat, and one corner that keeps causing trouble. The aim is a clean sequence you can recognize and reproduce. Lap times can improve after you know which part of that sequence needs work.
Keep the first comparison fair
Use the same car and route for several attempts. Choose something manageable rather than the most powerful vehicle in the garage. Avoid changing the tune, assists, difficulty, and car together; if the next race feels better, you will not know which change helped.
Match the car to the event's surface. A road race provides a clearer first lesson in braking and lines than an event mixing tarmac, rough ground, and large jumps. Dirt and cross-country driving are worth learning, but they add different questions about grip and terrain.

Start with a simple note after each attempt. “Missed the same right turn” is already more useful than “the car is bad.” If you can name the turn and what the car did, you have something to test on the next run.
Assists should reduce a specific problem
Keep assistance that makes the car understandable. Automatic shifting removes one task if you are still learning the route. Traction or stability assistance may help tame a car that repeatedly spins under power. A braking line can introduce corners you have not seen before.
These options are practical aids. Try reducing one when the relevant task starts to feel manageable. If you disable several at once and spend the whole event recovering from mistakes, you have made practice harder to interpret.