my team pokemon are only at around level 70 and it’s taking really long to level them up. Does anyone have any tips?

For quicker answers you should join the discord.

https://discord.gg/pokemonquest

The quickest way to level is level-up training using the same species/type. So making Gold pot Pokémon for training is viable here.

Also you can pick up the Bulbasaur flag and Fearow decorations to make level-up training move valuable per Pokémon used.

i, don’t use discord.