Usually physical, as they are superior vs digital.
+Physical games are almost always cheaper, on launch week deals most PS5 games are 50-60€ physical, 60-80€ digital.
+Physical games are often sold within 1-4 weeks from launch for 20-35€ so it is easy way to save money, to buy used
+Physical used games are easy to sell, if they are "play&forget" games. Like buy it for 40€, sell it for 35-40€ = almost free
-Have to change discs, but not a big deal
-Digital games have zero monetary value after you get them.
+they are easy to get, just buy&download
+no need to change discs
for PS5 most games I get physical and try to sell those that I dont play anymore, usually get them used or from sales. Digital I will get, if it is less than 15-20€ and I really want it, but havent bought anything in last 2 years digital.
for series x i dont buy games, got gamepass ultimate with the cheap gold trick for 94€ for 3 years, so I just play what is on GPU.
for switch there havent been any really interesting games in last 3-4 years, so no need to buy anything. But if I get something, it is physical as switch games keep their value better
ps+ extra and GPU basically made me buy 50-80% less games than before, there is literally hundreds of games on both in the library, maybe even +1000 in ps+ as I have had it since 2013. And time is limited, so impulse buying "cheap games" have ended.
Digital is more convenient, physical is more smart from financial stand point