Grub rescue> dilemma

On a Linux Mint 19.1 PC (formerly, a HP Windows 7 PC, Intel Core i7), I was converting over to Linux Mint 21.3 OS with a downloaded ISO image. This image on a bootable DVD had been used to successfully install the same OS on two old similar HP Windows 7 PCs. The process started without a hitch. Then, this dufus panicked after he chose the option to uninstall, and then re-install 19.1. Having realized that the wrong selection had been chosen, I stupidly stopped the process in mid-stream. The disaster? I have a frozen PC, no 19.1, no 21.3. Here's the message on the screen: "error: unknown filesystem. Entering rescue mode...grub rescue>" followed by a blinking underscore. So, with the help of online resources, I thought a solution was at hand for restoration. Using the command "ls" there were a series of "files"?. Some were "not found," but one was unique with the Message: "Filesystem is ext2." Supposedly, this was where deliverance was to be found. These subsequent commands using the same "file" were used: "set root...," then "set prefix...," then "insmod normal." All was going well until the last command and then the response cancelled me out going forward with the directions. Here is the new error message with that last command: "error: file '/boot/grub/i386-pc/normal.mod' not found." Then, it was back to "grub rescue>" Oh, the agony of defeat. Remedies? Or, have I just destroyed a functional PC? Thanks.