having doubt about doing a placement year

hi everyone
i have a question and if someone could give and answer i would really appreciate it.
i have a bachelor degree in electrical engineering and i have a shallow experience of coding in general for instance in python or c language. now i want to change my major to computer science for my master and i want to immigrate to England for that and i want to enter one of the England universities, the problem is that the universities of England have a plan called placement and i don't know if i have to go for this plan or not. some of my friends are saying that finding a job in England for a computer scientist is hard and since i don't have a my experience of working in a job here in my country i don't really that only one year of master is enough for me to find a job there or should i go with the placement plan. and one more thing that's really messing with my mind is that if forget about the placement plan i can enter a university with a better ranking and i don't really know that how much i should be considering the ranking of the universities. the universities that I'm talking about is Aston in Birmingham and university of Brighton. what should do?

You don't need to have done a placement year to study a masters here. It's more for when you actually want to apply for gradaute jobs etc.
What you do need is a good grade in your first degree.

i know
im going to apply for a master's program with placement year
my question is something else if you had read it.