In January 2024, I was immersed in oncology research, which is hard, exhausting work.

One month later, I made the decission to renew myself professionally.

I think you probably already know how to spell this just proofreading!

I was burningt out every day, working too many hours a day for a salary that couldn't even cover my rent, sowhich meant I had to work as a waitress at the same time (and, of course in a country like Spain, I earned a better salarmade more money pouring drinks thatn doing basic research) ¶
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I've always been interested in bioinformatics, so I started a new Master's degree in Big Data and Data Science.

Minor things to make it sound more native-like, perfectly understandable.

Also put „made more money“ usually talking about „salary“ is limited to specific jobs where you work 40 hours a week and are paid not hourly but monthly, regardless of how much you actually work(salaried employment). That said it could work differently in Spain and the bartending job could have been salaried haha.

Now, I'm about to finish it thmy degree next month, so I have moved to a city ion the coast, in order to have a remote job in the field of Datadata job.

I also work in data(data engineer) i think this is how I‘d say that.

I've always been a person hammered by other people's opinions ('You have to work hard, you have to dedicate your life to science, maybe you can discover the cure for one cancer, why would you leftave now?')

and tso making the decission of giving up was extremely difficult, but nowadays I'm happy.

The american in me wants to add an exclamation point at the end but this is perfectly fine haha

I miss my lab and my cells a lot, but I'm enjoying, for first time, my liffinally enjoying my life for once!

What you said was fine this is just a nice phrase to know.