26 letters, 44 sounds, and 144 ways to represent those sounds....once you crack the code, you can concentrate on comprehending the words on the page.
There are 2 sets of rules that have been forgotten since the mid 1800s.
The silent letter rules and the substitute letter rules.
I stuck them on one of my websites so anybody can take them for free, no click bait.
We used them when we homeschooled, very effective.
You might see a thing about t-shirts for sale.
I no longer do that.