Digress - Comments

Just look what you're doing. All your defenders will step out of your defence and you have no one on defend duty, nobody's providing any cover. You just get caught out all the time. It's normal.

This is not a good formation, but switching your defenders to cover duty will likely help immensely. That means you won't have anyone taking on the attackers, so you will still concede vs better teams.

You will need to find at least some sort of balance in your formation.

I can't see your tactics, but if you're on very fluid and perhaps attacking mentality and your players have poor decision making, this would be a logical consequence.