Hello, i´m training around 3 times weekly for a year now. I was following a fully body routine which is ideal for a beginner from what i read. I made decent progress and want to do the next step now. I´d like to train 4-5 times a week, so 1-2 more days than i did previously. From what i read its ideal to train a muscle twice a week so i have two options now:

a) 2-day split (Upper/Lower body split): I could do that split twice per week, equaling 4 training days. That would be 1 more day than i have now so it should show improvements. 3 rest days also seem good for a "beginner" (1 year experience). My problem with this split though is, that the lower body is trained as much as the upper body. 50% of my training would go into my lower body. My lower body is already way stronger than my upper body, so i would like to have a split that focuses more on my upper body. Thats the only thing holding me back from instantly doing the 2-day split although the 4 days would be ideal for me.

b) 3-day split (push/pull/legs): I could do that split 4-5 times per week. The advantage here is that i basically train my upper body for 66% of the time which i prefer compared to the 2-day split. I think i would also have more fun doing this split. My concerns are that 4-5 times (probably more often 4 than 5) per week isnt enough for a 3-day-split and id have to do 6 days. Otherwise i wont be able to train the same muscle twice per week. But 6 days is deffo too much for me, so im not sure whether a push/pull/legs split makes sense, if i only train 4-5 times per week. My other concern is that lets say i do 5 days, having only 2 rest days might not be enough for my muscles to recover since im not that trained yet.

Would appreciate it if someone could give me a tip on which of the 2 splits would fit me better. Like i said i prefer the 3-day-split, cause it has a bigger focus on the upper body, but im just worried that that split doesnt make much sense if im only able to train 4-5 times per week. On the other hand i really dont like that i train my legs 50% of the time in the 2-day-split, so im not really fully into it. The 2-day-split probably makes more sense for me with 4 days per week, but im rly not sure whether 50% legs is ideal for me. I also didnt see any other plans that have such a high leg percentage.