this basic problem still remains.
The OP probably has not flown anything.
his first attempt could be an absolute failure, or he could have crushed it. The end result will be the same, A pile of broken things.
This must be addressed first.
It is better to be able to replace a few parts than have to rebuild or replace an entire unit. The vast parts support of 250mm race quads affords this luxury.
Also, the general frame size supports the use of DAL props. you can beat the hell out of them without ending your day. Believe me, you will beat the hell out of them.
At the end of a week, they won't be pretty, but they'll still be usable, unlike others that just break.
You cannot evaluate anything if you cannot use it right.
here is a flight control board.
https://www.getfpv.com/electronics/...l-f4-flight-controller-v2-1-aio-fc-w-osd.html
What we get from this is a system that will work and serve as a baseline going forward.
It also serves as a textbook in that it still needs to be set up and tuned
Thats not a small detail ... It's not just a look under the hood, it's getting elbow deep in engine. As you make adjustments in Betaflight, you have an honest look at future design goals and requirements that must migrate over to your personal system development. Without things like mixers, control volumes, PID loops and a few pieces of digital ducktape to deal with other realities, you do not have a flyable drone, You have a schizophrenic food processor frantically searching for a victim.
What is to be learned from this, transfers over to larger scale drones with the physical real estate to facilitate wide open development. The goal need not, and probably should not end at just getting something to fly. Teach it stupid drone tricks, like GPS flight planning, covert toiletpapering missions, and perhaps home security functions.
By the second or third build, the OP should have such an open development platform that he can keep pulling out of the boneyard any time Tequilla inspires a new idea.