When someone play as a fighter or a samurai, dont expect them to attack the enemies head on. If there is no tank in the team, they'll likely ambush and find the opportunity to BD a mage and carry in the back or find a chance to break the composition. Idk why so many people expect them to tank head on when some of them dont have that much hp or armor lol. For example, Hannya is pretty strong and have high dmg once the enemy has low health so if he rushing in attacking the enemies but no ones follow him with the attack will cause him dead. He's good at split push. So if he roam alone means he sees the opportunity to push, don't blame him if he's not always in a teamfight, he's an offlane hero. Most people will only use the ulti skill when the time is right. So many time I also have to roam aroud clearing every lanes bc no one does. Clear your own lanes first and learn how to BD gdmit. Onmyoji is about laning, objectives and items so reading the situation is important. Sometimes people will ambush near the buff and steal it if the team is not ready. Don't expect some to go in a fight in front of the objectives! So don't blame them if they fail because they're not attacking. Ootengu/Kingyo for example can steal the buff because they're good at zoning but they have low health so they can't just go in and attack.
Mdef item is a must if you encounter more than 2 mages in this game. They won't die for 1 combo like in some other games. Most of the mage in this game do high burst dmg..even more dmg than markmen and they have shield as passive. So many games I don't see a support purchase the mdef robes for a team even though most of the teammates died bc of matk. The play space in this game is pretty large and the demon parades are a real deal. Make space for your team, focus on farming and lanes more than killing in early games..just play safe will make it easier to win. Believe me.