Need guidance for permanently moving to Japan

Hello,

I want to inquire about what is the best option for me to move to Japan with family (wife & 3 kids).
My elder brother already living in Saitama.

I have figured out some following points so far.

– To move on work visa? I do not have graduation & 9 years of experience in textile sector as a apparel designer (expertiese in denim). I tried to apply online from my home country but no success so far.

– to move as a student in language school? I am doing JLPT course from embassy which will be 120hrs of study time.
I also want to know, is it necessary to go in language school? Or I can go to vocational college and get certificate in my field and get the job in same. What will be the even & odds?

I may be missing more details, please ask questions if anything uncleared.
Also please suggest if any other option is workable for me.

I am so much looking forward for response.

Thank you.