The phrase "complete collapse" means a total failure or breakdown of something, where it falls apart completely or ceases to work effectively. Full definition
In the mainstream, there has been an almost complete collapse in new development in recent years. (nreionline.com)
The decline in new house building is long term and has been noticeable since the almost complete collapse in the construction of council housing since the 1980s. (theconversation.com)
Gunaratna said competition from Asia in the garment industry has resulted in the almost complete collapse of the Canadian garment industry. (thetyee.ca)