It's not necessary to use glue, the lid should fit with a little pressure.
The LED strip is stuck to the walls of the box.
I bought the LED strip on Aliexpress, it's also available on Amazon and other online stores, although they are probably more expensive.
https://es.aliexpress.com/item/1005005962011905.html?spm=a2g0o.order_list.order_list_main.21.6536194dubg6da&gatewayAdapt=glo2esp