Best to get professional advice.
Gum recession and gum disease are two different things and you need to know which you have.
Recession is not too worrying – it won’t cause you to lose teeth, it does look a bit unsightly and can make your teeth sensitive although sensitive toothpaste works to help this. A certain amount of recession is normal with age but over aggressive brushing makes it worse and stopping this is important to stop it progressing. The gums won’t grow back. It is possible to get gum grafted to cover it from somewhere else but it’s not a fun surgery.
Gum disease is bad news and will lead to multiple tooth loss without treatment. A dentist will help you treat it but basically y need excellent dental hygiene and regular scaling by a hygienist to halt its progression