No one gets incredibly strong in a short period of time.
Though the current culture thinks it should be otherwise, people actually have to do the hard work on a consistent basis for a long time to develop that kind of strength.
You are not entitled to strength, you have to earn it one day at a time, rep by rep, for years.
The process will involve many small PRs over the course of time (with a bigger PR once in a while).
Read up on any really strong lifters and look at how long they have trained.
It just takes time. The whole body will be changing as the strength levels improve. This cannot be safely accelerated. Give it the time it needs.
One of the biggest stumbling blocks I have seen over the years is people not being satisfied with a small PR, they want a bigger PR right now and don’t get it.
When they are strong enough, later, they will probably get it.
The results follow the work.
They always have.