id4nte2013 :
do u recommend another motherboard that will work perfectly with i7 8700k?
Assuming you do not want to replace you current mATX case, then, obviously, you'd have to look for Z370 mATX-sized motherboards. This narrows down your selection as there are only several available models that fit that criteria. However, only a couple of such models are highly-recommended considering higher performance specifications. Here are some models to take a closer look at:
Asus ROG Strix Z370-G Gaming https://www.asus.com/Motherboards/ROG-STRIX-Z370-G-GAMING/
Asus ROG Strix Z370-G Gaming (WiFi AC) https://www.asus.com/Motherboards/ROG-STRIX-Z370-G-GAMING-WI-FI-AC/
EVGA Z370 Micro...