It’s always worth reading what the BBC has to say on Brexit and this is from the website today:
“There was an initial dip in the amount the UK exported to the EU. Once teething problems were dealt with, trade volumes, recovered to pre-pandemic levels, according to official figures. But it could be argued trade might have grown more if it hadn’t been for Brexit.”
It might also be argued that trade might have fallen had we remained.
All you lot are doing is the usual nonsense based on confirmation bias. In reality we have no idea and claiming “experts” know the answer is also pure nonsense.