long launch ubuntu 18.04

systemd-analyze blame
         22.886s plymouth-quit-wait.service
         12.292s dev-sda3.device
         10.163s systemd-journal-flush.service
          8.296s plymouth-start.service
          7.810s dev-loop20.device
          7.324s dev-loop21.device
          7.184s dev-loop13.device
          7.086s NetworkManager-wait-online.service
          7.079s dev-loop22.device
          7.015s udisks2.service
          6.918s dev-loop17.device
          6.881s dev-loop18.device
          6.806s dev-loop19.device
          6.706s dev-loop15.device
          6.674s ModemManager.service
          6.488s snapd.service
          6.404s dev-loop16.device
          6.161s dev-loop8.device
          6.059s dev-loop9.device
          6.041s dev-loop10.device
          6.006s dev-loop11.device
          5.992s dev-loop12.device
          5.815s dev-loop4.device
          5.665s networking.service
          5.582s dev-loop14.device
          5.536s dev-loop3.device
          5.327s dev-loop7.device
          5.265s dev-loop5.device
          5.110s grub-common.service
          5.014s networkd-dispatcher.service
          4.935s apport.service
          4.737s gpu-manager.service
          4.680s dev-loop1.device
          4.654s dev-loop2.device
          4.624s NetworkManager.service
          4.427s dev-loop0.device
          4.063s dev-loop6.device
          3.823s accounts-daemon.service
          3.782s wpa_supplicant.service
          3.543s polkit.service
          2.725s speech-dispatcher.service
          2.467s avahi-daemon.service
          2.279s thermald.service
          2.214s systemd-sysctl.service
          2.142s alsa-restore.service
          2.135s pppd-dns.service
          1.997s systemd-logind.service
          1.866s rsyslog.service
          1.604s systemd-udevd.service
          1.518s apparmor.service
          1.452s teamviewerd.service
          1.414s snap-gnome\x2d3\x2d26\x2d1604-64.mount
          1.409s colord.service
          1.347s snap-skype-45.mount
          1.334s virtualbox.service
          1.280s packagekit.service
          1.132s systemd-modules-load.service
          1.076s keyboard-setup.service
           990ms fwupd.service
           776ms systemd-tmpfiles-setup-dev.service
           764ms snap-gtk\x2dcommon\x2dthemes-319.mount
           690ms snap-sublime\x2dtext-18.mount
           659ms systemd-backlight@backlight:intel_backlight.service
           648ms systemd-timesyncd.service
           631ms snap-core-4830.mount
           608ms snap-gnome\x2dlogs-37.mount
           579ms snap-gnome\x2dsystem\x2dmonitor-51.mount
           570ms snap-core-4486.mount
           551ms user@1000.service