Getting a student visa and going to language school again?

So about 10 years ago I graduated from a Japanese language school on a student visa and passed the JLP2 test, then attended a vocational school for another 2 years in Tokyo. I was supposed to find a job but that never happened because frankly my Japanese speaking skills weren't good enough at the time to get a job at a Japanese company as a salaryman. I could read and understand Japanese well and could write an essay if i had a dictionary but just had a really hard time communicating with people in real time so it was hard to be taken seriously which is kind of why I would like to go Japanese school again thats focused on business perhaps to improve my Japanese communication skills in order to get a job at a Japanese company perhaps

My understanding is that you can't attend a Japanese language school and a student visa again if you already went to one. One of the requirements for the school I went to was that you didn't have a previous history of making an application, but thinking about it now maybe that was just a roundabout saying that they aren't accepting people that had previously been rejected? I looked at some other Japanese language schools but they weren't mentioning anything about this rule and I can't find anything on the immigration bureau site.

I also found out about that the rules changed for getting a student visa recently and that you need 150 hours of Japanese Study to get a student visa which I already have (the graduation certificates and the JLp2). Does that mean they are accepting or always accepting those with previous Japanese study experience? Has anyone been able to attend Japanese language school twice? I've looked at other visa options, and could apply another way perhaps but the language school route seems to be the most reliable for me atm.

by No-Chemical6473