hmmm...this forum is about FXtec phones and this is TCL.
I see, that your phone is in fastboot/bootloader. On this screen press power button for normal start.
If phone boots again to this screen, then use VOLume buttons - select Recovery, press power button - phone boots into recovery. Here select with vol buttons wipe data and then select reboot.
If phone still boots into Fastboot, then is neededt to test firmware flashing............