Thanks for posting about this here in the Community!
No worries, you can easily transfer the playlists, saved tracks and users you follow in another Spotify account by following the steps in this Spotify Answer. This way, you won't need to use a third-party service to do that if you're unsure about it.
Once you've got everything over to your Spotify account, you can also cancel the subscription on your first account and close it if necessary to avoid any mix-ups.
Let us know how you get on! We'll be right here if you need more help.
Have a lovely day 🙂
Help others find this answer and click "Accept as Solution".
If you appreciate my answer, maybe give me a Like.
"Kindness is the language which the deaf can hear and the blind can see." - Mark Twain