I've found exactly the opposite !
In the first few months after the start of the first lockdown my funds on all my active sites were going down and down, I couldn't win anything.
In the last few months I have started winning again.
My guess is that the beginning of lockdown saw a whole new bunch of players play online for the first time, I couldn't beat them, you could.
Now they have got bored with online and are doing something else.
Were they the best of the live players, or were they complete newbies who didn't know how to play ?
Who knows.....