Netflix reality star Louis Russell -- who is dating Huda Mustafa of "Love Island USA" -- has been in a court battle with his baby mama, Nicole Olivera ... who submitted alleged texts from Huda crashing out as evidence ... TMZ has learned.   According to court documents obtained by TMZ, Nicole showed the judge a ton of messages she claims Huda sent Louis ... showing Huda freaking out about her BF not answering.  In one screenshot, Huda allegedly writes to her BF, "IM LOSING MY MIND. I CAN’T …