“We don’t have a usability lab”
Well, sorry to be the one to break the news: but you don’t need one. First, there are tons of user research methods other than usability testing —user interviews, surveys, card sorts, A/B tests, scenarios, diary studies, intercepts, shadowing — so stop thinking about “usability testing” as soon as you hear “user research”. Second, even if you are doing usability testing, you don’t need to gather your participants in the same physical space. Remote user testing is becoming increasingly accessible, and so are the tools and software you will need to be able to run them.