pls help me!!

hiii guys I bought this Evangelion garage kit in Japan and its over 20 years old and I really want to build it!! I know it's dumb bc it's vintage but I just need to build it!!

but the problem is the plastic was once clear and now its very yellow and no glue will stick on it I tried so many glues but nothing works and even the ones that were recommended don't work

do you guys have any ideas pls???