how can I achieve faster mariadb inserts - sql

Question

I am dealing with a bit over 15 billion rows of data in various text files. I am trying to insert them into MariaDB using golang. Golang is a fast language and is often used for big data but I cannot get more than 10k-15k inserts a second, at this rate its gonna take over 15 days, I need this data imported sooner than that. I have tried various batch sizes but they all give about the same results.
function I'm using to handle file data:
func handlePath(path string) {
file, err := os.Open(path)
if err != nil {
fmt.Printf("error opening %v: %v", path, err)
return
}
defer file.Close()
scanner := bufio.NewScanner(file)
var temp_lines []string
for scanner.Scan() {
if len(temp_lines) == line_batch {
insertRows(temp_lines)
temp_lines = []string{}
}
temp_lines = append(temp_lines, scanner.Text())
}
insertRows(temp_lines)
fmt.Printf("\nFormatted %v\n", path)
if err := scanner.Err(); err != nil {
fmt.Printf("\nScanner error %v\n", err)
return
}
}
function I'm using for inserting:
func insertRows(rows []string) {
var Args []string
for _, row := range rows {
line_split := strings.Split(row, "|")
if len(line_split) != 6 {return}
database_id := line_split[0]
email := line_split[1]
password := line_split[2]
username := line_split[3]
ip := line_split[4]
phone := line_split[5]
arg := fmt.Sprintf("('%v','%v','%v','%v','%v','%v')",database_id,email,password,username,ip,phone)
Args = append(Args, arg)
}
sqlQuery := fmt.Sprintf("INSERT INTO new_table (database_id, email, password, username, ip, phone_number) VALUES %s", strings.Join(Args, ","))
_, err := db.Exec(sqlQuery)
if err != nil {
//fmt.Printf("%v\n", err)
return
}
total+=line_batch
writes++
}
Server specs:
server