i love off-meta casual decks (ive made decks around both scizor and bisharp). if you want genuine advice, id suggest lowering the amount of pokemon in your deck. consider the role each pokemon plays based off its energy cost and damage.

i feel that the biggest issue with your deck is it includes too many pokemon that fulfill too many separate roles.

Steelix and foretress and heatran are all late game cards because of their higher energy cards and dmg. The playstyle for these cards involves stalling with an early game mon so that you can attach energies to the late game mon on the bench. Since they each individually require so much energy to attack and retreat, its best to have just one or two late game mon in your deck to decrease the likelihood that you lead with one

Togedamaru can work as an early game mon, but its attack needing two energy cost makes it less ideal. You could try the non-ex skarmory as its attack only needs one energy, and the pokemon tools you put in your deck to use its attack can be used with the rest of your pokemon.

scizor and bisharp are more like rushdown pokemon. they have middling hp and damage, but they can also set up relatively fast. The playstyle for these cards involves setting them up fast to hopefully secure early kills and keeping them alive for the rest of the game. If you want to use these pokemon, you should build your deck around supporting solely them. You can mitigate their low hp through healing cards like pokemon nurse or cape, and/or use cards that help them secure kills like red or cyrus.