I've been happily driving a BYD Atto 3 for ~6 months now. Very happy with it, its got a lot of nice software and hardware features, carplay/android auto works well, driving is nice and very smooth (especially on sport mode), and my daughter loves playing with the "strings" on the doors. The most glaring issue is the battery which is really its weakest part.
Is it better than a Tesla? Probably not - there are clearly places in the software where I know that Teslas are more polished (e.g. the "360" parking view which IMO could be a bit better, although I feel like I'm parking in gta 2), and the acceleration won't blow your socks off. However, they're much cheaper and it's a good family car (for us) - definitely for the price.
If OP is comparing their experience in your BYD to Tesla's marketing material, that's not a correct comparison. Tesla battery ranges should generally be derated quite a bit to align them with how the rest of the industry measures range.
And that goes only for rather flat terrain and non-cold environments. Otherwise the discrepancies end up just like consumption of ICE engines in ads vs reality.
Battery is fine by itself, but I'd say that the range is somewhere between 315-350km depending on terrain etc. Definitely not the 420km that's advertised. I knew this beforehand from reviews so it wasn't unexpected, but I'd be pretty angry if I didn't read about it from reviews before I got the car.
For me it's fine as I still only charge once a week and I still have around 70%-80% usually, unless I visit remote relatives. I could probably stretch and recharge every other week if I really wanted to, but I prefer to have it ready as we sometimes do have longer drives.
Is it better than a Tesla? Probably not - there are clearly places in the software where I know that Teslas are more polished (e.g. the "360" parking view which IMO could be a bit better, although I feel like I'm parking in gta 2), and the acceleration won't blow your socks off. However, they're much cheaper and it's a good family car (for us) - definitely for the price.