i am not buying yet , just ask ....
i go park and travel sometime in summer and just want to look cool with dslr in body >>
and now i see nothing diff if it true like you said , i think i wont spend 600$ dollar for item that work same as iphone 8+
picture taking is posted via facebook , and facebook does reduce quality picture >> even dslr take clear picture it will look same as iphone taking ,
As usual, feel free to ignore this...
If you are hoping a DSLR will make you look cool then you are asking the wrong question. A DSLR is not a cool accessory, it is a camera nerd thing - of which I am proud to be one of. Further, the first thing an actual photographer does is try to direct attention AWAY from their camera.
Carrying a camera advertising your make and model on the strap screams "steal me". Not a good idea. Anyone carrying a Canon 5D MK IV for example on the supplied strap screams I paid thousands for this camera. You will find that lots of people who understand this now cover their camera branding with black tape and swap the straps for non-descript ones. If it is purely about cool, then go on ebay and buy a cheap used Canon 1100d or Nikon D3000 (which will both still take better images than the iphone), $200 and you have your look.
An iPhone, while taking great images of a single type, will NOT give you the creative flexibility an ACTUAL camera will give you. It may have auto focus but it only has a single focal length. If all you are doing is taking duck pout selfies and posting to social media, then keep with the iphone. If however you want to take amazing photographs, then you need an actual camera be it DSLR or mirrorless etc.
Really not being rude here but the fact you are asking this question and the way you have responded so far, I think you should stick to your iphone until the time when you realise its limitations and know why you need an actual camera.
Hope this helps.