burnt and decayed lawn

[xyz111]

hi
i am 1 year into gardening now. i moved into property with newly laid lawn which i did not take care and the grass and weeds appeared and grew very tall then i trimmed them and started mowing the grass but it never recovered. since last year i have been using various seeds and lawn thickening formula etc but it never recovered to the extent when it was handed over to us.

i have tried scrapping the surface, aerating it but does not help.
latest i have tried 'after cut' formula and seeds have been eaten by birds...what to do?

i could post some pics and if someone could advise..

thanks..

[tomf]

Photos may help. Did you over fertilize it or put too much weed and feed down?

[ButterflyLady29]

Knowing your location would help. Your soil type is also necessary information.