boot problems::slow boot and plymouth theme

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Hi everyone. I just installed fedora.25 Mate spin. Facing too much problems ever with fedora installation. buring boot plymouth theme is not appearing, i tried installing new plymouth theme and regenerated gurb.cfg but no help.

Also boot takes good 5 mins. I tried systemd-analyze to get following:

systemd-analyze blame 9.397s systemd-journal-flush.service 7.920s dev-mapper-fedora\x2droot.device 7.679s systemd-udev-settle.service 7.507s firewalld.service 5.734s lvm2-monitor.service 5.099s accounts-daemon.service 3.860s abrtd.service 3.107s ModemManager.service 2.025s upower.service 1.806s bluetooth.service 1.449s gssproxy.service 1.322s chronyd.service 1.228s polkit.service 1.202s proc-fs-nfsd.mount 1.156s abrt-ccpp.service 1.054s systemd-rfkill.service 1.032s rsyslog.service 979ms udisks2.service 910ms systemd-tmpfiles-setup-dev.service 879ms fedora-readonly.service 765ms avahi-daemon.service 725ms NetworkManager.service 665ms systemd-udevd.service lines 1-23...skipping... 9.397s systemd-journal-flush.service 7.920s dev-mapper-fedora\x2droot.device 7.679s systemd-udev-settle.service 7.507s firewalld.service 5.734s lvm2-monitor.service 5.099s accounts-daemon.service 3.860s abrtd.service 3.107s ModemManager.service 2.025s upower.service 1.806s bluetooth.service 1.449s gssproxy.service 1.322s chronyd.service 1.228s polkit.service 1.202s proc-fs-nfsd.mount 1.156s abrt-ccpp.service 1.054s systemd-rfkill.service 1.032s rsyslog.service 979ms udisks2.service 910ms systemd-tmpfiles-setup-dev.service 879ms fedora-readonly.service 765ms avahi-daemon.service 725ms NetworkManager.service 665ms systemd-udevd.service 664ms cups.service 629ms lvm2-pvscan@8:6.service 587ms systemd-tmpfiles-setup.service 557ms auditd.service 551ms lightdm.service 498ms systemd-udev-trigger.service 458ms systemd-logind.service 450ms fedora-import-state.service 432ms systemd-journald.service 423ms dmraid-activation.service 386ms dev-hugepages.mount 340ms dev-mapper-fedora\x2dswap.swap 340ms systemd-sysctl.service 331ms dev-mqueue.mount 293ms nfs-config.service 274ms user@1000.service 207ms rtkit-daemon.service 205ms systemd-fsck-root.service 200ms systemd-vconsole-setup.service 187ms wpa_supplicant.service 183ms livesys.service 176ms plymouth-quit-wait.service 174ms plymouth-read-write.service 173ms systemd-backlight@backlight:radeon_bl0.service 171ms rpc-statd-notify.service 137ms blk-availability.service 137ms systemd-user-sessions.service 109ms kmod-static-nodes.service 104ms dracut-shutdown.service 103ms plymouth-quit.service 96ms systemd-random-seed.service 93ms systemd-remount-fs.service 89ms home.mount 62ms sys-kernel-debug.mount 40ms systemd-update-utmp.service 23ms plymouth-start.service 20ms livesys-late.service 17ms systemd-update-utmp-runlevel.service 12ms sys-fs-fuse-connections.mount 11ms var-lib-nfs-rpc_pipefs.mount 9ms tmp.mount 5ms sys-kernel-config.mount lines 22-65/65 (END) What should i do to improve boot time? Please help.