It is worth repairing the clutch

My girlfriend has been the owner of a 20-year-old Mitsubishi Space Star for a year. Since she doesn’t have much money, the purchase of these cars for 300 € made sense, because she needs a car for work. The car was driven solidly this year, we had 700 € at repair costs so far. Now I wonder if this is going on so uncomplicatedly, or if at some point bigger repairs come (coupling, timing belts). Small things are already broken. in the wobble contact, the radio has broken the power stage (material costs 200 €). Do you have any idea what else can come up with? Maybe she should exchange the car for a younger one after all, but she doesn’t want to spend more than 3000 €.