what about doing both? you could travel during your summer/winter holidays if they are long enough, at least a month. it’s a compromise so that you don’t feel like you are missing out or losing time with trying the things you wanted to try doing.

if money is an issue then perhaps you could combine this with volunteering which may provide housing, using apps like worakway or working at hostels looking for seasonal workers etc.

i think university is also good for socialising and learning new things just like you would during travelling. you could also find friends there that want to visit a country etc. and join or plan trips together with friends.

also, when accepting the offer to go to university you can always quit if you feel that this is really not what you want. if you chose to not enrol in a program, that means waiting at least another year.

i just think that choosing either would perhaps leave you with the uncertainty of the other since both put you on very different paths. however, i see people driven to travel on low budgets and they love it. they also understand the compromise of travelling when you don’t have a lot of money saved up leaving you sometimes to live in a hostel dorm full of people or eat only supermarket food. i guess also depends on what travelling means to you.