Is my deck that bad?

Pokémon: 10

1 Spiritomb PAL 89 2 Bidoof CRZ-GG 29 2 Origin Forme Palkia V ASR 167 3 Blastoise ex MEW 184 1 Manaphy CRZ-GG 6 1 Wartortle MEW 171 3 Squirtle MEW 170 1 Origin Forme Palkia VSTAR CRZ-GG 67 1 Radiant Greninja ASR 46 2 Bibarel CRZ-GG 25 1 Blastoise PKMN GO 17

Trainer: 10

1 Super Rod PAL 276 2 Superior Energy Retrieval PAL 277 2 Boss's Orders LOR-TG 24 3 Rare Candy SVI 256 1 Pokégear 3.0 SVI 186 2 Artazon PAL 171 3 Iono PAL 185 3 Earthen Vessel PAR 163 PH 3 Irida ASR 186 3 Ultra Ball SUM 161

Energy: 1

17 Basic {W} Energy EVO 93 PH Total Cards: 60

I have been told that this devk is very mediocre, which i agree! Its not for meta, just to beat my friends even more. But some people said it is so horrible. Its my first deck that i put a little effort into, but does someone have any feedback? How can i improve it?