Hired to a team with no prior QA

I was recently hired to a large fintech company, to a team that had no prior QA Engineers. Automation Engineers were the ones responsible for the manual QA workload. Also, there is no QA Lead in the team. They are expecting me to begin writing automation test cases in a few months. And I will be working a lot with BA's, not just PM's.

I have close to 3 years of prior experience as a QA in a telecommunications company, where I was the only QA on my team, but the difference is that we were 3 testers together under the supervision of a QA Lead.

I would like to know how to integrate smoothly, and what to change/introduce/disregard, because as it seems, they would like me to take the role of a QA Lead in the near future, if all sides are mutually interested of course.

The obvious things that pop into my mind are:

• Go over the existing documentation and organize it.

• Collect the relevant API collections (from other teams if needed, from QA and Devs.)

• Go over the regression suites, sanity checks, and add what is needed/remove what is redundant.

• Introduce new tools where possible (I don't have many tools at my disposal, especially ones that I can say that I have mastered, but I will do my best to stay up to date with the industry standards).

One last thing, they are using UIPath for automation, and I am currently studying Python alongside Playwright.
I have no prior experience with UIPath, and I've heard that it's a bit outdated. Can anyone shed some light on it?

Would love to hear your thoughts and about similar experiences. Cheers!