I think great replies have already been given.
Just to add my two cents: how’s the relationship between your bishop and your community? My community has a bishop who makes an active effort to join groups of us (e.g. university students) on an annual basis, where everyone eats a meal as the laypeople can ask him questions and he answers. At one of these events, someone asked him about why there had been a recent flurry of priest transfers, and he gave very straightforward answers. I’m not saying this may be applicable/appropriate in all cases, but just putting that out there, to encourage bishops/communities to consider such annual chatty meals if they’re not already practicing them.
Also, it sounds like the priest who’s been father to your parish recently was wonderful for you. I can only imagine how sad it may feel to be losing this familiar father figure you had such good experiences with.
At the same time, perhaps it may help to imagine how much the parish he’s moving to may need such a good father figure as this? Your bishop has access to more information about where the needs are, than you do; maybe it’s been assessed that your parish is in relatively good shape (all things considered), and this other parish is in dire straits (maybe especially due to this pandemic) and in the big picture maybe they have a special need right now for the special skills this priest has, more than your parish does. I’m not saying that’s definitely it, but maybe. And God is your Father always, and your bishop will send you another priestly father to continue to minister to you: you will not be left fatherless.
Just a matter of perspective. Jesus and his disciples moved from town to town, too.
PS just had another thought: I often find it helps me, to suddenly be faced with a new priest I’m not naturally thrilled with, or a familiar priest I find abrasive on a personal level. Because the lack of natural connection to the priest, reminds me that they are there to mediate Christ to me. It’s not about them. It’s about Christ. Sometimes having a priest who forces me to have patience with him, reminds me to be extra grateful for him, and to thank God for sending him to serve us as Christ. Don’t know if that makes sense. True in my case, though. Maybe it might be a pair of glasses you can try on? Refocus on the fact that the same Christ is mediated through every different priest? And sometimes it’s easier to see Christ in him if we don’t naturally like the priest, because we’re not getting distracted looking at the priest’s good qualities? We’re forced to sit down then and see the priest for only how Christ shines through him, and how he serves Christ.