You evaluate your own form, your own capabilities before you pay for the application form. Evaluate, pay, get feedback with one of three suggestions.
Example.
If you are already 26-27 years old, have some professional background and want to step up to a higher level, why not give it a try? Some teams are looking for ready-made players and you might get an invitation from just such a team.
If you are from some distant country but you have the opportunity to come, why not?
Clubs care about a prospect's soccer skills first and foremost.
And vice versa.
If you are 28 years old, no professional past, you should realize that the chances of signing a professional contract at a good level are about zero.
Theoretically, you can get an invitation to a trial, for example, in the 6th league in Germany (with the expenses for the time of the trial you bear yourself) and a salary of 1000 euros + housing + part-time work in the factory + lunch + bonuses. But, again, you have to understand this. Fantastic stories happen, they make movies and write books about it, but it happens in one case in a million