I'm not saying give everyone free energy is the solution as it has to be paid for somewhere, but imo gov can definitely do more.
This may be pie in the sky thinking, but some thoughts:
VAT could be cut or capped, I think it's 5% VAT, when bills are 4 x higher than last year, the VAT is also a lot higher. I don't think removing it's a good idea as clearly the VAT is there for a reason, but it seems like it's scaled well out of proportion at the moment.
I think we still pay a green energy fee which is also a % of the unit costs, this definitely could be scrapped short term. With unit prices high, private investment or even public funded investment into more green energy should be a priority, and any such projects would be profitable on their own merit.
I note that some energy producing firms are reporting record profits and paying out shareholder dividends whilst this is certainly a growing crisis, it seems to be at odds with current events.
Lastly I guess unit pricing could be scaled somehow? the more you use, the more you pay for units? Would encourage people to use less and find ways to cut usage if they can. This could be tricky to enforce.