As said before, it depends on what bread you are making - but for plain bread I think the taste difference between dried and fresh yeast is marginal.
You can buy fresh yeast easily and very cheaply from many suppliers on ebay. Buy 100grams at a time, use 20g-25g grams per loaf and freeze the rest if it's going to be longer than 7 days before you make another.
I buy in 500g at a time - vacuum pack it into 100g bags and freeze. I have frozen my yeast for up to 3 months with no problems.
The main taste is with the flour, and commercially used flour, whether it is a local bakers shop or large bakery, is the highest quality for the job it is doing - that is, producing commercially viable bread with the best profit margin.
It will rarely be the high quality flour that you would purchase from a mill for your own use. Let’s face it you don’t have to worry about profit margins, so your loaf costing you about £1 to make is always going to be far superior to a loaf you buy from a commercial outlet for £1 (which has about 15p worth of ingredients)
If your local bakery shop is just selling flour from a bin with no provenance etc - it is no better than buying that white stuff that masquerades as flour from Lidl.