For You to make helpers interested and get the best replies, please read and follow this link: How to get the best out of this forum - Using Arduino / Project Guidance - Arduino Forum
My remark is: post the entire code using code tags, </>.
Your Lora.read yields a character, not an int. You also send a single character, not ant int.
You need to collect the characters building the int. Check Arduino/reference for parseln.... (Not finding the exact definition in this late moment).
Know that all helpers are complete newbies to Your project. The surrounding, total code, is needed to get the big picture.