I'm very frustrated about what "research collaboration" is
Collaboration is not something that can be forced. It is built on top of personal relationships, and requires some element of trust to have been established. The best collaborations emerge organically over time: really, the best strategy is just to spend as much time as you can working in the lab, talk to people, show interest in what they are doing, and allow relationships to develop.

Also, bear in mind that collaboration is a two-way street: both parties have to expect to benefit in the long run. You say that you are a masters student in a large university. From the perspective of a more senior researcher, this means you probably don't yet have enough experience or expertise to be particularly useful - or at least, you have not yet had the opportunity to demonstrate this. Again, the only real solution is to be visible, proactive, and give people an opportunity to see how you stand out from the crowd.