Applying for Masters from low ranked university

It’s probably enough - hopefully someone will be able to confirm.

Dont worry about it. 'Which Uni' is entirely a school leavers obsession - academics have a broader viewpoint, and they just look fpr 2i or First in a relevant suject.

Some universities and admissions teams will definitely do benchmarking against prior performance of students on their masters courses from other institutions, that spreadsheet might never get circulated externally but it does often exist as there can be major differences between a given grade from different universities.

Having worked at an RG Uni and recruited new teaching staff and PG students, no 'spreadsheet' existed.
We recruited from a wide range of Unis, including the OU and what you probably regard as 'lower Unis'.
Clearly not all Unis are as prejudiced or narrow-minded as yours.

Not so much prejudice as damning statistics. If you see three students in a row arriving from one institution with notional strong firsts all scoring sub 40% on every assessment both practical and formal exam, benchmarked against a large and we'll understood internal cohort it does tend to point to quality control issues at other institutions. That example ended up with a "never recruit from there again" marker for very good reasons.

Dont worry about it. 'Which Uni' is entirely a school leavers obsession - academics have a broader viewpoint, and they just look fpr 2i or First in a relevant suject. The most important aspects of amy postgrad application are your statement - 1) Why this course/research, 2) Why this Uni, 3) Why me - plus a really supportive reference. The name of your undergrad Uni will not be the deal-breaker. Apply.