@Whatsmyusername1235 An automatic (owned one for about 7 years at one point) is easier as you don't have to consider gears, both hands are on the steering wheel and it can help your brain process everything else that is going on.
I think the way you can help yourself for free is to watch some Youtube videos and especially mock tests. The driving instructor voices over and points out what they do well and where they make mistakes and what they should have done. This helps you see lots of other driving routes and meeting situations.
Knowing the top reasons people fail, number 1 is observation at junctions, 2 is not using mirrors, if you move your car over look in the side mirror first so moving out to avoid parked cars, check your mirror first, then check your mirror when moving back over. 3 is moving off safely, again this is usually mirrors.
I am also going to recommend watching dash cam videos, the vast majority are near misses, poor decision things, cars sometimes make contact. The biggest one that I feel should be shown on a driving theory test ie before you sit it as a safety video is being on the left hand side of a HGV and sitting in their blind spot, they will pull left and usually clip the back end of the car spinning it round. The other dangerous one is anyone overtaking when there is a junction on the right, firstly the car they are overtaking might turn into the junction, or a car coming out of the junction does not look both ways to see if the road is clear for them to enter. I am not saying you will do either of these but knowing this can happen makes you back off from the situation.
So a list for you, diving instructor videos, DGN Driving, Clearview, Conquer Driving, really helpful videos.
Dash cam, any compilation ones but the best is Ruby Dashcam because it has a caption telling you who is in the wrong. Sometimes instead of backing off a situation people like to drive into it to add to the drama and post a clip. Idiots. Ashley Neal, a driving instructor, has viewer clips too and comments on them.
My son learned to drive last year so I was watching a lot of these videos with him as he was also practising in my car. DVSA recommends 45 hours of driving lessons with an instructor and 22 hours private practise. It seems like a lot but I think it comes down to putting yourself in as many situations as you can under instruction of how to navigate it. But you can do far less and still be safe enough to pass. The videos massively help. We don't have ambulance gates where I live and it is on Clearview in London!