彼は自営業をしていた。

tbd

He did the work on his own.

自営業の方がいい。

tbd

I'd rather self-employment.

I find self-employment is best.

I prefer to work on my own.

ジョンソン氏は自営業で、家具の修理をやっている。

tbd

Mr Johnson is self-employed and is in the business of repairing furniture.