Need help deciding what should be my first budget-friendly competitive deck. Advice needed and appreciated!

Hey fellow (and probably, hopefully expert) duelists! A friend of mine recently got me into Yu-Gi-Oh (or back into it. I watched the show, but never bought more than a few booster packs, before leaving my one friend in Georgia who was really into it, and well, nobody to play against kind of changes one’s priorities regarding what to collect)!

My budget is $20, but I think I could reach up to $30.

One direction I've been considering is just building this deck:

A Water Barrier Statue Deck. Credit to the Thrifty Duelist. By my calculations, the total would actually be $9.58, but that's partially because some cards have become limited over the past several months.

But the other deck option I'm thinking of is building off of my Crystal Beast Structure Deck. My friend has suggested adding Pendulums, so for the moment, I've settled on the Odd-Eyes. I think in theory, they should provide some punch while I attempt to summon my most powerful monsters, which would be the Ultimate Crystals, Five-Headed Link Dragon, and Hamon, Lord of Striking Thunder.

Long list coming. I did have notes underneath most of the entries, but I had to delete them, as Reddit wouldn't let me post this otherwise. Oh well, I can still explain what I was thinking for my choices in future replies!

Ancient City-Rainbow Ruins x1 (1x Currently Owned): $0.04 Total

 Archfiend Eccentrick x3: $0.27 Each

Ayers Rock Sunrise x3: $0.09 Total

Crystal Abundance x1 (1x Currently Owned): $0.05

Crystal Beast Amber Mammoth x2 (1x Currently Owned): $0.06 Total

Crystal Beast Cobalt Eagle x2 (1x Currently Owned): $0.04 Total

Crystal Beast Rainbow Dragon x2 (1x Currently Owned): $0.02 Total

Crystal Beast Ruby Carbuncle x1 (1x Currently Owned): $0.02 Total

Crystal Beast Sapphire Pegasus x2 (1x Currently Owned): $0.58 Total

Crystal Beacon x2: $0.06 Total

Crystal Beast Topaz Tiger x2 (1x Currently Owned): $0.08 Each

Crystal Bond x2 (1 Currently Owned): $0.18 Total

Crystal Keeper x1 (1 Currently Owned): $0.02 Total

Crystal Master x1 (1 Currently Owned): $0.04 Total

Crystal Promise x1 (1 Currently Owned) $0.08 Total

Crystal Release x1: $0.04

Dimensional Barrier x3: $0.30 Total

Dimension Guardian x3: $0.47 Total

Evenly Matched x3: $3.00 Total

Five-Headed Link Dragon x1: $1.18 Total

Forbidden Droplet x1: $5.00

Golden Rule x2 (One Currently Owned): $5.50 Total

Infinite Impermenance x1 (because it's kind of pricey): $4.99

Lyna the Light Charmer, Lustrous x1: $0.21

Number 59: Crooked Cook x1: $0.30

Odd-Eyes Pendulum Dragon x3: $0.69 Total

Odd-Eyes Phantasma Dragon x3: $2.52 Total

Odd Eyes Phantom Dragon x3: $0.42

Odd-Eyes Rebellion Dragon x3: $0.09 Total

Odd-Eyes Rebellion Dragon Xyz x3: $0.63

Odd-Eyes Revolution Dragon x3: $1.05 Total

Rainbow Bridge x2 (1 Currently Owned): $0.06 Total

Rainbow Bridge of the Heart x2 (1 Currently Owned): $0.18 Total

Rare Value x 1: $0.02 total

Current Subtotal: $27.73

Apologies for the long post, and thanks in advance for advice in helping me decide which cards I should buy!

Also, I will be trying to build these decks in Master Duel, and try to post them as visuals later on, either by editing this post, or as an addition to this thread, because I have seen other people provide similar visuals.

This will not include limited/forbidden cards that I cannot add to my Master Duel decks.