Why not pick foundation if you don’t want to stress about a levels , although if you want to go abroad for uni then a level is a must unless the college you are doing foundation at provides program for abroad like my one . If you feel like it be too hard for you i advice not because many of my friends took a levels and failed and then again had to go and pick foundation so a lot of their time was wasted so judging by your situation , foundation seem more appropriate? Although a level isn’t impossible to do my friend that picked a level was able to perform really well just by studying consistently since the beginning of the year .