as a first time buyer who is just starting, buy a Bambu A1 and be done with it.
I have spent a lot of time on the more DIY style machines from Creality etc - and while they are quite good for what they are but they are a time sink,
In 3d printing , there are a lot of variables and the impact of those variables isn;t immediately obvious as 3d printing is intrinsically a slow process.
That can make the whole trial & error process frustratingly cumbersome.
If you enjoy continous tinkering and have a fair bit of patience, the ender v3 is all you need
I too might have thoroughly enjoyed the tinkering process when I was younger and had plenty of free time.
However I recently replaced my Creality with a Bambu A1 mini and couldn’t be happier since it automates almost all of the cumbersome tasks including calibration, flow rate analysis and bed levelling.