We have two if clauses: The type 1 and the type 2
The type 1:All these actions are possible or real!
For example If we go there we can ride on bike trails.
We use simple present behind the if and we use will future+infinitive or modal verb+infinitive
The type 2: Something is a theorie but not real!
For example If Florian had enough money he would buy a fast car.
We build if clause with simple past and the main clause with would/ could/ might+infinitive