The Cromwell Rebellion occured after Shakespeare, So there were no jews in England at Shakespeares time (At least open jews)
Merchant of Venice was not as anti-semetic as say The Jew among thorns by Grimms Fairy Tales (Cinderella, Snow White)
Shylock was not really portrayed as a bad guy at the end , Shakespeare probably never met a jew in his life
I am a Jew. Hath not a Jew eyes? Hath not a Jew hands,
organs, dimensions, senses, affections, passions; fed with the same
food, hurt with the same weapons, subject to the same diseases,
heal’d by the same means, warm’d and cool’d by the same winter
and summer, as a Christian is? If you prick us, do we not bleed? If
you tickle us, do we not laugh? If you poison us, do we not die?
And if you wrong us, do we not revenge? If we are like you in the
rest, we will resemble you in that.
Read the Jew Among Thorns by Grimms Fairly Tales