Transfering data from non-default apps to new phone

I'm currently in the process of transferring my old phone's (Samsung Galaxy A8) settings, data, media etc to the new one (Samsung S22 Ultra). The Samsung **Smart Switch** app *does* transfer things like the apps themselves, the home screen layout, photos etc just fine. However, preferences and bookmarks in (at least some) non default apps do *not* seem to transfer. One example is the national news app, NOS . Smart Switch has transferred the app itself, however none of my settings or news bookmarks (I have a few hundred) can be found on the new phone. Other examples: PostNL , Buienradar and Calls Blacklist . PostNL for example does allow you to log in, but past deliveries and mail history disappear. Other apps only run locally, without an account, and are therefore stuck on the old phone. I've found that this lack of data/settings transfers applies to all of the non-default apps I've opened so far. In some cases *some* data can be transferred by logging in (if possible), but *historic* data does not seem to transfer. I assume all of these end up being files in the internal memory structure however. So, is there a means to (relatively painlessly) **transfer these to the new phone**? Note that the new phone uses Android 12, and a recent comment suggests that adb based solutions may not work. I also get the impression that Titanium Backup (which would additionally require rooting) may not work as smoothly anymore based on recent reviews. PS. The **samsung-galaxy-s22** tag does not exist yet, I'd appreciate it if someone with sufficient reputation could create this. Thanks!