try and avoid buying “by the grape”, it’s a terrible British habit.
Some grape varities do well in certain terroirs where others are awful and vice versa.
Pinot Grigio is also known as Pinot Gris in Alsace.
The connundrum with wine is that below a certain pricepoint there is drinkableish wine and there is absolute rot – alcoholic grape juice people drink with determination, not adoration.
Jacobs creek and most other massive volume producers gernally fall into the former. That is the power of chemically controlled wines: consistency.
My best advice is pay no less than £6 or £7 for a bottle of wine. And preferrably £10+.
Since youre not a big wine drinker, it shouldnt cost you a lot, but it will be far more enjoyable.
As reference, I buy my wine from the producers from anything between €7 and €18 a bottle. The same wines, if available in the UK would be priced between £15 and £50.
I also buy drinkable splosh for around €3-5 a bottle, but remember, in France the duty on the bottle is 4p. In the UK it is £1.44p.