Sorry for the delayed reply. If there is no backup of the deleted messages, first stop using your Samsung phone. Cause if the deleted messages are overwritten by new data, there is no way to recover them back. Then you can ask help from samsung data recovery software like Dr.fone, Coolmuster Android SMS + Contacts Recovery, Recuva for Android, etc. Actually, it's not that easy. You need to root your phone before using such tool. About the details, please search online. Good luck to you.
Hi, try going to setting, then battery & device care, click on storage and there should be a recycle bin. Click on messages, open the message you want to retrieve then click on edit and you should have a restore icon showing at the bottom of the screen. Good luck.
