Countries have different requirements for obtaining a tourist visa, but generally speaking, these are:
Valid passport: Make sure that the six months remaining on it after your intended stay in Europe are covered by your passport.
Express your plan to travel Europe for leisure, tourism, or to see family and friends in clear terms.
Evidence of sufficient funds: Show that you have the money to pay for your lodging, travel expenditures, and any other costs.
Return/onward ticket: Show proof of a return or onward ticket, stating that you plan to depart the European nation at the conclusion of your stay.
Obtain travel insurance that will pay for emergencies and medical costs that arise while you are visiting Europe.