Looking on the internet deeply has found these results:

my english is not very good is the most popular phrase on the web.

my english is not well 11,400 results on the web	my english is not very good 1239,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Feb 23, 2015 ... Question: Sorry if my English is not well. I feel scared when you say that I am everything. do not feel any need to talk to anyone. I am afraid that�... My English is not well and i want to improve it with getting some friends who can speak English or who try to learn English like me. Maybe we�... Hi Everyone, I'd tell that my english is not well enough but i understood everything clear because she really explain everything with understandable English and�... ... talking about my experience here ( i'm 16 by the way ) but i'm having struggles with the beggining plus my english is not well developed so it's a little bit harder�...	Your English is very good, almost flawless. I thought I should call 9 My English isn't good, either. 1, but my English is not very good and I had no credit left on my phone. Jameel, your English is very good. Your English is very good, Suki. Your English is very good, Sasha. 1

my english is not well

11,400 results on the web

my english is not very good

1239,000 results on the web

More popular!

Feb 23, 2015 ... Question: Sorry if my English is not well. I feel scared when you say that I am everything. do not feel any need to talk to anyone. I am afraid that�...
My English is not well and i want to improve it with getting some friends who can speak English or who try to learn English like me. Maybe we�...
Hi Everyone, I'd tell that my english is not well enough but i understood everything clear because she really explain everything with understandable English and�...
... talking about my experience here ( i'm 16 by the way ) but i'm having struggles with the beggining plus my english is not well developed so it's a little bit harder�...