I can't complete the Pokemon league can anyone help and tell me if my team..

A easy way to beat the Elite 4 is by getting Raquaza in your party. Go back to Sky Pillar and catch him. Then you will easliy beat the Elite 4.

Train your Pokemon to at least level 65.

You should put a snorlax at level at least 65 with rest, sleep talk, snore, and 1 other move of your choice instead of Swellow. Also, put a shedinja level 65-75 with shadow ball, and 3 other moves of your choice instead of Gyarados.

Then put Registeel level 65-75 with super power, lock on, zap cannon, hyper beam instead of Hariyama. Then change Wailord for Regirock level 65-75 with rock throw or rock slide ( I don't have him at level 100 like I have with my other pokemon), superpower, ancient power, and a move of your own, preferably earthquak, if you have tm 26. Thats the team that should help you.

To get regirock, go to the sand storm, then go down until you get to a opening, once you get in, go to the very top. Youll see something(im not sure what it is), then go to your left twice and then down twice. That should help alot I don't have time for registeel. Good luck!

Try blaziken and rayquaza because I finished the Elite 4 with just the two. Try this : blaziken for Sidney then use rayquaza for Phoebe use outrage for two turns then switch use blaziken use blaze kick then switch use outrage again. For Glacial use blaziken with double kick for walrein use sky uppercut. For drake use rayquaza use outrage for two turns then switch use blaziken use sky uppercut for flygon switch use rayquaza's outrage for kingdra and salamence. I don't know how would you defeat Wallace because I also find difficulty in defeating him

Note: bring revives and full restore . Your Pokémon must be level 75 or higher then also bring electric type Pokémon. Good Luck