Pair up. Get social. Find a shooting and reloading buddy with more experience than you. You will make a lot more progress much quicker than being on your own and figuring everything out by yourself.
Don't feel shy to reach out personally and ask questions. Reloaders in general are very keen to share their knowledge and experience, and will gladly help you. They were once where you are now.
If you do a search online now, there will be a number of modified ladder tests. If it makes you feel better, try any of them, at least to determine for yourself what they are worth, or not worth.
When testing your reloads, shoot from a stable position. This means that your leaning against the bench doesn't move the bench or the rifle, or shifing the position of your hand doesn't move the bench. If the bench is not immobile, rather shoot from prone. A bench that moves even one millmeter will negatively affect your results.
When a pro shooter advocates any product or brand of product on Youtube, it's for revenue or sponsorship purposes, not to help you improve your results.
When a competition winning F-Class shooter demonstrates a result, then goes on to illustrate a particular reloading methodology, approach very cautiously. Understand, the information shared is not their full or current picture. The high end accuracy gamers consider themselves and their knowledge exclusive, in spite of claiming not to be. The notable exception is Jack Neary.
There are parallel tracks to precision load development. Each track intersects the other, and have to be run in parallel. Learning to hold zero consistently, verifyng that the platform is reliable, selecting the right components and the reloading equipment and methodology you choose to use, all run parallel to each other. This is why the process is laborious and very time consuming. The number of variables multiplied by the different ways people choose to do things is guaranteed to make your journey interesting.