Eternatus VMAX and Crobat V deck

I'm new to making decks, so here is my Eternatus VMAX and Crobat V deck.

POKEMON:
2X Eternatus V 116/189
2X Eternatus VMAX 117/189
1X Crobat V 104/189
1X Galarian Slowbro V 99/189
1X Darkrai 105/189
4X Deino 108/189
2X Zweilous 109/189
1X Hydreigon 110/189
1X Arctozolt 66/189
1X Arctovish 54/189
2X Spinarak 102/189
2X Ariados 103/189
2X Nickit 112/189
1X Thievul 113/189


TRAINERS:
3X Billowing Smoke 158/189
2X Familiar Bell 161/189
2X Struggle Gloves 171/189
1X Cape of Toughness 160/189
1X Old PC 164/189
1X Hyper Potion 166/189
1X Rare Fossil 167/189
2X Kabu 163/189
2X Piers 165/189
1X Rose 168/189
1X Spikemuth 170/189


ENERGY:
1X Hiding Darkness Energy 175/189
1X Powerful Colorless Energy 176/189
3X Water Energy
3X Lightning Energy
12X Darkness Energy


Is this a good deck?