Need help reinstalling Grub after trying to set up dual boot

Apologies if this is a dumb question but I've been having troubles with this for a week any tips will be very much appreciateddd

Also sometimes there would a partition that's named nvme0p1 and nvme0p2 but often dissappear and those hold my Bazzite data and the other one had a efi folder (I heard that was important from some videos.i watched but please correct me) Tysm in advance :glorp:
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