Help with Bash Backup Script before shutdown

Getting Help
1

In the stage creating a bash script to run before i shutdown my desktop.

Does my script need any more anything else?

I want to have proper check with –read-data alongside forget + prune maintance script created.

#!/bin/bash

source /home/$USER/.bin/backup/.env

LOG_FILE="/var/log/scripts/pc-backup.log"

log_message() {
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" | tee -a "$LOG_FILE"
}

restic unlock \
    --repo "$RESTIC_PC_REPO" \
    --password-file <(echo "$RESTIC_PC_PW")

restic check \
    --repo "$RESTIC_PC_REPO" \
    --password-file <(echo "$RESTIC_PC_PW")

restic backup \
    --repo "$RESTIC_PC_REPO" \
    --password-file <(echo "$RESTIC_PC_PW") \
    --verbose \
    --tag auto \
    --compression auto \
    --files-from "/home/$USER/.bin/backup/backup.files" \
    --exclude-file "/home/$USER/.bin/backup/exclude.files" 2>&1 | tee -a "$LOG_FILE"

BACKUP_EXIT_CODE=${PIPESTATUS[0]}

if [ $BACKUP_EXIT_CODE -eq 0 ]; then
    log_message "Backup completed successfully"
else
    log_message "ERROR: Backup failed with exit code $BACKUP_EXIT_CODE"
    exit $BACKUP_EXIT_CODE
fi