Not able to delete previously installed distro

So I recently shifted to Fedora from Garuda and I am really happy with it. The problem is that when I boot my pc instead of starting Fedora , somehow it launches Garuda instead and then I have to shutdown and launch Fedora from Boot Setup again. I want to completely uninstall Garuda and want to use Fedora as default. I am a newbie , please help me with this

  Kernel: 5.17.5-300.fc36.x86_64 arch: x86_64 bits: 64 compiler: gcc
    v: 2.37-24.fc36 Desktop: GNOME v: 42.0
    Distro: Fedora release 36 (Thirty Six)
  Type: Laptop System: HP product: HP Laptop 15-di2xxx
    v: Type1ProductConfigId serial: <superuser required>
  Mobo: HP model: 86B3 v: 88.30 serial: <superuser required> UEFI: Insyde
    v: F.36 date: 02/03/2021
  ID-1: BAT1 charge: 12.0 Wh (34.9%) condition: 34.4/40.9 Wh (84.2%)
    volts: 11.0 min: 11.3 model: Hewlett-Packard PABAS0241231
    status: discharging
  Info: quad core model: Intel Core i5-10210U bits: 64 type: MT MCP
    arch: skylake note: check rev: 0 cache: L1: 256 KiB L2: 1024 KiB L3: 6 MiB
  Speed (MHz): avg: 795 high: 800 min/max: 400/1600 cores: 1: 797 2: 766
    3: 800 4: 800 5: 800 6: 800 7: 800 8: 800 bogomips: 33599
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Device-1: Intel Comet Lake UHD Graphics vendor: Hewlett-Packard
    driver: i915 v: kernel arch: Gen9.5 bus-ID: 00:02.0
  Device-2: Chicony HP TrueVision HD Camera type: USB driver: uvcvideo
    bus-ID: 1-5:4
  Display: wayland server: X.Org v: with: Xwayland v: 22.1.1
    compositor: gnome-shell driver: gpu: i915 resolution: 1920x1080~60Hz
  OpenGL: renderer: Mesa Intel UHD Graphics (CML GT2) v: 4.6 Mesa 22.0.1
    direct render: Yes
  Device-1: Intel Comet Lake PCH-LP cAVS vendor: Hewlett-Packard
    driver: snd_hda_intel v: kernel bus-ID: 00:1f.3
  Sound Server-1: ALSA v: k5.17.5-300.fc36.x86_64 running: yes
  Sound Server-2: PipeWire v: 0.3.49 running: yes
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Hewlett-Packard driver: r8169 v: kernel port: 4000 bus-ID: 01:00.0
  IF: eno1 state: down mac: <filter>
  Device-2: Realtek RTL8723DE 802.11b/g/n PCIe Adapter
    vendor: Hewlett-Packard driver: rtw_8723de v: N/A port: 3000
    bus-ID: 02:00.0
  IF: wlo1 state: up mac: <filter>
  Hardware-1: Intel 82801 Mobile SATA Controller [RAID mode] driver: ahci
    v: 3.0 bus-ID: 00:17.0
  Local Storage: total: 1.14 TiB used: 4.74 GiB (0.4%)
  ID-1: /dev/nvme0n1 vendor: KIOXIA model: N/A size: 238.47 GiB
    temp: 33.9 C
  ID-2: /dev/sda vendor: Seagate model: ST1000LM035-1RK172 size: 931.51 GiB
  ID-1: / size: 929.93 GiB used: 4.58 GiB (0.5%) fs: btrfs dev: /dev/sda3
  ID-2: /boot size: 973.4 MiB used: 152.8 MiB (15.7%) fs: ext4
    dev: /dev/sda2
  ID-3: /boot/efi size: 598.8 MiB used: 13.9 MiB (2.3%) fs: vfat
    dev: /dev/sda1
  ID-4: /home size: 929.93 GiB used: 4.58 GiB (0.5%) fs: btrfs
    dev: /dev/sda3
  ID-1: swap-1 type: zram size: 3.64 GiB used: 515.4 MiB (13.8%)
    dev: /dev/zram0
  System Temperatures: cpu: 50.0 C pch: 49.0 C mobo: N/A
  Fan Speeds (RPM): N/A
  Processes: 341 Uptime: 1h 26m Memory: 3.64 GiB used: 2.45 GiB (67.4%)
  Init: systemd target: graphical (5) Compilers: gcc: 12.0.1 Packages: N/A
  note: see --pkg Shell: Bash v: 5.1.16 inxi: 3.3.19

Welcome to ask.fedora @healer

Could you please give us more info’s as :

inxi -Fzx in terminal and post the output as </> Preformatted text here.

Please take also time to read #start-here if you not had time yet.

I am sorry , I posted it now , please check

please check when you edit your post, you can mark it and then click on the </> icon to format it as preformated-text.

Did you select both of your drives during the Fedora installation? If not it may have only setup the boot on one drive and you basically have two boot drives. In that case, you likely have options for either in your BIOS boot menu, and if so, you should be able to boot Fedora and then use the disk utilities to allocate the other drive for Fedora as well.