You are objectively wrong.
See here for an example :
https://www.bbc.co.uk/news/business-65962497
Latest results in that data the UK is higher.
But the 9 months previously it is lower.
"However Brexit has to be a major factor in our current scenario and our dependence on EU supply chains."
What evidence do you have that this statement is true ?
Unfortunately the tactic of "Blame Brexit for Everything" by making nebulous statements just isn't working anymore in persuading anyone who knows anything about economics.
Brexit is a big change (although the effects of it are happening very slowly). It's going to have effects on the economy. Some positive and some negative - you can search the internet for data on various sectors.
But overall at the moment effects of it seem to be less than many people anticipated, and certainly are difficult to deconvolve from the other effects of covid, the effects of the Ukraine war and the effects of US (global) macroeconomic policy.
Unfortunately (or fortunately depending on your perspective) Brexit has happened/occured at the same time a lot of other big things in terms of macroeconomic policy have happened. So separating the effect of it from these things is hard.