5 year vs 6 year Med

Hey,
Im on a gap year and want to play my med options safe this year.
Im eligible for gateway/foundation years in 5 unis total, which is alr bc i only have to choose 4 anyways. But im confused abt whether foundation years are safe or if i should go for 5 years with a contextual offer? Im not sure but in my mind, contextual 5 year offers will allow me to apply with lower alevels ONLY and my ucat still has to be the same as 'normal' applicants, is this right? And with foundation years, BOTH, my ucat and alevels can be lower?
For reference I got ABB and a few 5 year courses might also take my grades.
But then Im doubting foundation years as 'safe' bc of the hugeeeeee influx of med applicants this year and their small number of places available😭😭 wouldnt this mean i have a higher chance in 5 year courses then bc there's more places available?
Someone please give ur opinion on whts more safer for me.
Thanks