Use 1 of your UR dream ticket to buy Brave neos, SR dream ticket goes for dragon keeper and a neos fusion. Get a cosmic cyclone with your second dream UR.
Next buy the neos structure deck and dragon keeper structure deck. Get a leng ling and the cyberdark engine via SR tickets to build a cyberdark neos deck, a bit competitive and a very good auto battle deck.
Then slowly get invoked engine to switch to invoked neos to be more competitive.
This is an expensive 1st deck but very much worth it. The idea is you'll be getting the staple 3x cosmic cyclone and two very good engines (neos and invoked), thi is more of an investment than the other option. The only possible wasted gems here is getting 3x volcanic shell.
Note: Karma cut is P2W card but can be replaced by raigeki break (mini box UR), ultimate providence is R.
This is not a new player guide. This is a whole year guide. It requires getting 4 dream tickets fgs. Not to mention go through 2 main boxes 3 times each.
A new player get 2 SR dream ticket and 2 UR dream ticket. Not to mention a lot of gems through duel quiz, loaner deck and leveling newly unlocked characters until level 30 (which does not take too long by playing againts the gate duelist with 3x reward and exp.)