What do you actually want to do with it?
That is where I would start. Range use, hunting and general recreational shooting can point you toward very different choices.
If you cannot explain what you want the rifle for yet, that is fine. Start there before worrying about every little specification.
Fit is easy to overlook
A rifle can look great online and still feel awkward once you shoulder it. Overall length, weight and how naturally it comes up matter.
If something feels too heavy or too long for you, that is worth paying attention to. You are the one who has to live with it.
Do not get buried in caliber debates
There are plenty of opinions about calibers, and the internet can turn that into a full-time hobby.
I would keep it practical. Think about what the rifle is for, what ammunition is reasonably available, what the cost looks like, and what you are comfortable shooting. If you are unsure, ask before ordering.
Remember the rest of the setup
The rifle may not be the only cost. You might also need an optic, rings or a mount, a case, safe storage, hearing and eye protection, and range time.
That is why I like looking at the whole budget instead of just the price on the rifle.
Check exactly what is included
Two listings can look almost identical but include different magazines, sights, finishes or accessories. Model numbers and UPCs help make sure you are comparing the same thing.
If you send me a listing, I can help you look at what is actually included instead of relying on the headline.
Think ahead, but do not overbuild the plan
It is fine to think about whether you might want an optic or other accessories later. You just do not need to solve every possible future upgrade before buying your first rifle.
Start with something that makes sense for what you want to do now.
My simple rule
Choose the rifle for the job you actually have, not the imaginary checklist somebody else handed you. Fit, comfort, ammunition cost and the total budget will tell you a lot.
Send me what you are looking at.
If you have a model, UPC, or link and you are not sure what it means or whether it fits what you want, send it over. I would rather help you sort it out before you spend money.