How to make it works nowadays?

[squiter]

I'm trying to make it run but the instructions was outdated...

λ:[📂 ~/dev/code/whatsapp-iphone-backup] ➡ go get github.com/mattn/go-sqlite3
go: go.mod file not found in current directory or any parent directory.
	'go get' is no longer supported outside a module.
	To build and install a command, use 'go install' with a version,
	like 'go install example.com/cmd@latest'
	For more information, see https://golang.org/doc/go-get-install-deprecation
	or run 'go help get' or 'go help install'.

λ:[📂 ~/dev/code/whatsapp-iphone-backup] ➡ ls
 dump.go   main.go   README.md   utils.go

λ:[📂 ~/dev/code/whatsapp-iphone-backup] ➡ go install github.com/mattn/go-sqlite3@latest
go: downloading github.com/mattn/go-sqlite3 v1.14.16
package github.com/mattn/go-sqlite3 is not a main package

λ:[📂 ~/dev/code/whatsapp-iphone-backup] ➡ go build -o exporter *.go
main.go:14:2: no required module provides package github.com/mattn/go-sqlite3: go.mod file not found in current directory or any parent directory; see 'go help modules'

Do you know how can I make it works today?