
I'm trying to use this deck but I'm stuck at rock bottom of Plat V. Any advice you have on how to actually start climbing the ranks?

Short: Go first, you (should) win!
Long:
Vs Ash: Always summon Junk with Converter/DW/Carrier or bait it beforehand
Vs MaxxC: Either just pass, or if you know the matchup/terrible hand go for the MaxxC Challenge
Vs Nibiru: Never summon Librarian/DW early, you can always recover with Jet/Stardust package
other Handtraps aren't common enough/damaging
other Tips: best end boards include Herald, it stops Droplet, Tri-Brigade, ... etc.
add more go Second cards like Droplet or Storm if you want to
you can always play more extenders/different synchrons, these are the best imo
in the ED, Satellite, Martial, Dragster, Abyss are the cards you could potentially exchange
Ordering/Comboing is different from game to game, I think with the new cards it should be fun/good enough to climb rather easily