Welcome!
I wouldn't say that the Zenit 11 and FED 5 are "best equipment". Saying that, I do have one of each in perfect working condition. If you find one for a bargain price and it is fully working, them they can be good cameras to have.
The Zenit in particular opens the possibility of further nice lens as it has a M42 mount and lenses are easy to find and cheap.
But, they do have several drawbacks, the major one being their rustic manufacture.
I would advise a better system camera.
You have many to choose from.
But, one thing you need to choose is what type of camera you want your 35mm to be.
You posted an example of a compact, a rangefinder and a SLR.
I'll suggest you get one and only one, preferably a SLR or a rangefinder with a 50mm lens.
Use it, learn how it works, practice until you can reach all controls with your eyes blindfolded. Get intimate with it.
In the same way, use one film until you know all its nuances.
Have a nice photography.