how to buy real estate

late 20's and i want to buy an apartment in Brussels to live for the 5 years then probably rent it, the issue is everything seems overly expensive, i have around 70k sitting but i can't decide what to buy and where. salary is around 3300 net.

i can buy a two bedroom in the west side of Brussels but what is the economical prospect of that side ? I can buy one bedroom in the east side where it's more middle class. budget is around 300-320k for current rates

i have also looked around Brussels but the prices are higher than the west side, as i work in Brussels i need a direct train line. I am kinda stuck for like 1 year not knowing what to buy, the longterm is investment as i said in 5 years i will probably rent it.

Any suggestion on my dilemma is welcome.