One of the things you learn assembling furniture that comes disassembled is that you rarely, if ever, need to use brute force.
Instead, all you need to do is be patient, pay attention to the details, and keep at it for as long as it takes. If you have good tools, you may shave off some time. But, there are few shortcuts available otherwise.
And, if you do find yourself resorting to brute force, it is a sign that you’ve made a mistake somewhere. Hammers are rarely useful in ensuring the right pieces fall in place.
When pieces fall into place, they do so because of accuracy and finesse.
There’s a life lesson in there somewhere.