High startup time in ubuntu

I have Legion Y530 with a 1TB HDD & 128GB SDD. I have Windows on my SDD and Ubuntu installed on my HDD. Ubuntu takes about 10 minute to boot up. Here is what I get when I run systemd-analyze time:

Startup finished in 3.870s (kernel) + 12min 20.274s (userspace) = 12min 24.144s graphical.target reached after 9min 18.431s in userspace

Here is what I get when I run systemd-analyze critical-chain:

The time when unit became active or started is printed after the "@" character. The time the unit took to start is printed after the "+" character.

graphical.target @9min 18.431s
└─multi-user.target @9min 18.431s
  └─docker.service @48.222s +8min 30.208s
    └─containerd.service @25.523s +22.695s
      └─network.target @25.518s
        └─NetworkManager.service @17.944s +7.572s
          └─dbus.service @17.937s
            └─basic.target @17.798s
              └─sockets.target @17.798s
                └─snapd.socket @17.794s +1ms
                  └─sysinit.target @17.650s
                    └─snapd.apparmor.service @17.237s +412ms
                      └─apparmor.service @16.447s +789ms
                        └─local-fs.target @16.445s
                          └─run-snapd-ns-snap\x2dstore.mnt.mount @9min 42.475s
                            └─run-snapd-ns.mount @9min 34.928s
                              └─local-fs-pre.target @3.952s
                                └─systemd-tmpfiles-setup-dev.service @2.793s +1>
                                  └─systemd-sysusers.service @2.454s +337ms
                                    └─systemd-remount-fs.service @2.282s +162ms

Can someone help me out?