What one aims at, is to stop or reduce the chimney effect. This is a problem with showers in a bath, as no seal at the bottom. I in last house used a set from B&Q two half height doors, which clipped together, no chance of water spraying on the floor, also fitted special bath so a bit more room, but using it, the chimney effect filled the bathroom with moisture.
Opening a window does not really get rid of it, just cools the room so it condenses, an extractor above the shower so it does not go into the room, seems good in theory, but it draws replacement air from the rest of the house, so also need a vent in the door for replacement air.
Mother's house was a wet room, no shower screens, and no mould problem, this house stand-alone shower cubical, no gap at bottom, also no mould problem, both never used the extractor fan. But last house, with a shower in the bath, mould was a problem.
In the last house, it took so long to fill a bath, we had an instant gas water heater I think 18 kW, so the bath never really used, this house, two independent electric showers, and two baths, bottom bath has my wife's e-bike in it, short of safe space to store it, and top bath think in last 5 years used around 3 times.
Again, in summer to run a bath we need to turn the oil boiler on first, as the immersion heater only heats the top 9" of water in the cistern. So need at least 2 hours warning. The immersion works great to give handwashing water, from the solar panels, but no good for a bath.
Which raises the question, why have a bath? When the children were young, we bathed them in the sink, so even that no excuse for having a bath.