Is it worth trying

Okay I don't know even know how to start this. Ive been in a relationship with my boyfriend for over 5 years. We have two beautiful children together. And to be honest this relationship has been a roller coaster. I know not every relationship is perfect. But I mean how much is a person suppose to take. Since I've had my second baby who is almost a year old, our relationship has went down the drain. We constantly fight and argue. For everything. I've tried speaking to him, trying to fix things. At times we are good then again we fight and argue. Same o thing over and over again. I really want to save this relationship but it takes two. I'm on the edge. I can't 😔.. Any advice. Thank you guys for your time.