I was lucky as a newbie that I ended up at
Decathlon for my entry level bike. No sales pressure as is their business model, lots of genres, models and sizes to try out. Helpful staff and a workshop to set things right.
But that dream of a brick and mortar bike shop/store evaporated when it came to higher models and performance bikes. Limited model, sizes and options. And the staff telling me that the particular size and model suits me when they do not. And this notion of building and maintaining a relationship with your LBS is rather misplaced in this day and age. I stopped having relationships with my butcher, fishmonger, baker etc a long time ago. The World has changed.
I then discovered that online stores that offer loads of options and many also offer free trials and ready returns. And amazingly they are cheaper and delivered the very next day if ordered the morning before.
So now with my desired geometry for the bike and the base specs, I do a spreadsheet of options that are on offer online. A decent comparison can be automatically calculated for geometry deviations and the costs.
There is still a place for stores. Giant and Specialised are probably the models for the future of brick and mortar stores. Great service, lots of sizes, quality products, warranty integrity albeit limited to their brand. The other are high end servicing bike shops to handle the difficult diagnostic, fixes and custom jobs. No cheap but money well spent. And then you have hypermarkets vendors like Decathlon who serve the masses well with great choice for entry and intermediate grades.