Then just buy the parts you need at https://selfservicerepair.com and use amateur tools you get elsewhere.
Their free repair manual won’t tell you how to use those, but still will be helpful.
And you’re right. You don’t have to use Apple’s tools.
But boy did people complain when Apple finally released them after years of people complaining they didn’t support fixing your own stuff.
Then just buy the parts you need at https://selfservicerepair.com and use amateur tools you get elsewhere.
Their free repair manual won’t tell you how to use those, but still will be helpful.