The answer depends on where you are now, which you do not tell us. If your native language is Ukrainian you will find it easier to learn Russian than German. If your first language is Dutch then German will be easier for you to learn. Russian has many differences is grammar from Germanic languages such as Dutch, English, German, etc. It also have fewer cognates. Russian is written is a different script which you will need to learn as well as the language. So, if your first language is English, written in Roman script, you will have a much easier time learning German, another Germanic language also written in Roman script than you will have learning Russian, a Slavonic language written in Cyrillic script.
There are also other factors that will affect how you learn. They include whether you have already learnt another language. At school and university I learnt French and acquired fluency by living in France. Because I already have a second language I found learning others easier. Another important factor is dedication. It does not matter which language you try to learn. If you are only going to do one hour per week you may as well not bother. It simply is not enough. You need to do some practice every day. It may not be possible to do a lot on some days, but daily practice is important.
Also if you can try to speak with someone who is a native or, at least, fluent speaker of that language. That once was not easy advice to follow but with the Internet it is much easier to achieve. Remember languages are primarily meant to be spoken and if you are going to learn a language you need to dive right in and speak it from the outset.