OK, I’m not gonna judge. I’m happy if you recognize that English-speakers are a minority and Fahrenheit users are limited to the U.S. So we shouldn’t feel entitled either to American English species names or to Fahrenheit temperature measurements. Meanwhile, my advice:
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You don’t have to learn Latin to grasp Linneaean genus names. Just memorize the few that interest you. For me, apple = malus, pear = pyrus, mulberry = morus, peach/plum = prunus, persimmon = diospyros, chestnut = castanea, grape = vitis. That’s about it.
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You don’t have to tranlate every F to C manually every time. You could use any on-line app (e.g., Google “21 C to F”). And/or you could take 10 minutes and write up a table, e.g., 32 F = 0 C, 72 F = 22.2 C, 212 F = 100 C. If you did this, after a month or so you’d be able to think in Celsius.