Currently, Pakistani selectors are doing some experiments and these are not working for them just because of this now blaming on pitch or conditions are not helpful for them overall quality in cricket is going down badly.
They needed to work on improvement in domestic structure and other related stuff which give their players better chance of performance and also increase their confidence like India doing through IPL and few other domestic leagues.
Bangladesh having good momentum, but sadly they are also not consistent which is the biggest issue for them, they also needed to keep things on balance and their players also needed to be had consistent performance which will give them good chance of having win against big teams.
Actually I am not much aware about the management of Pakistan cricket team or I watch their news very less and that is why I don't really know about this matter.
But yes I have seen many new faces in Pakistan team where before I used to see Mohammad Rizwan and Pakistan's pride Babar Azam I don't know very likely they may go into retirement.
Actually this time is very difficult for every team Bangladesh team is also going through this situation at present. Even then, perhaps they can make good performence against Pakistan because they have one or two experienced players in the squad.