In that case, dnf info akmod-nvidia* should list the following packages: akmod-nvidia, akmod-nvidia-340xx, akmod-nvidia-390xx, akmod-nvidia-470xx. Is that what you see?
Also, follow the steps outlined in this post and report back.
These are the three last Fedora kernels you had installed, plus a rescue kernel. Since you’ve deleted windows, the windows boot entry you are seeing and which proposes the reinstallation of windows is probably a hidden restore partition. All of that is normal and has nothing to do with your issue.