u/Soggy-Parsley-4866

This area at the end of my garden was always a mess.Nothing really grew here.Last year I cleaned it up and put down grass seeds.They grew but I mowed them and the grass just died off. In spring I put more seeds down, they grew and I decided to leave them all summer to establish. However, they've just literally wilted. Even before the recent heat waves they were almost cowering! I thought grass was really hardy and always bounced back. What am I doing wrong.