It seems to me that Virginia is relevant since you are using it as a "role model" in this discussion. You say that the streets are not filled with drug addicts. However, the death rate from opioid addition in Virginia in 2017 was 14.8 deaths per 100,000 people, which was above the national average.
https://www.drugabuse.gov/opioid-summaries-by-state/virginia-opioid-summary. In California, it was 5.3.
https://www.drugabuse.gov/drugs-abuse/opioids/opioid-summaries-by-state/california-opioid-summary I don't think that this problem exists because Virginia failed to acknowledged it, determine root causes and apply a fix. I think that it is a complex problem with no single, simple answer. It has caused a lot of human suffering and I hope we can find a way out.
You surely know there are real population, size, location and topography differences between where you live and California. Virginia has fewer people (8.6 m) than the population of Los Angeles County. California's population and area is almost 4 times that of Virginia. California's deserts are almost the size of Virginia. 25% of California's 163,693 square miles are desert. Are any of Virginia's 43,00 miles are in a desert (excluding food deserts)?
Those factors might help explain why you have water and why it is an issue in California and other western states. It might explain why California has different approach to gas prices. Los Angeles County (which as you recall has more people than Virginia) and other CA cities had a crippling smog problem because of climate, topography and cars. Part of the cost addressing this issue include higher gas prices. You may not agree, but many prefer higher gas prices to the smoggy alternative. AAA credit rating? That's better than CA. However, taxpayers in Virginia receive more than $10k each in benefits than they pay in tax. It is the biggest imbalance of any state in the country.
https://rockinst.org/issue-areas/fiscal-analysis/balance-of-payments-portal/ But if we want to talk economy, California is the fifth largest economy in the world with a per capita GDP of $76k. Seems pretty effective. In Virginia the per capita GDP is $52k.
Look, I am glad you like Virginia and I am totally fine that you and other folks wouldn't want to live or visit somewhere else. You can even keep your extra tax benefits! But I do object to the idea that things are trouble free everywhere but California and the solutions are obvious. Extrapolating from anecdotal parochial experiences regarding what you see in your town doesn't do this discussion justice.