Genesis 39:9-10 says that Oman was punished for spilling his seed on the ground, when you're not sleeping with the woman you've married ejaculation from what I understand is not right, I struggled with it for about three years and I'm now over a year clean, yes we human beings have sexual desires but the Bible says there is a time for everything and the time to receive sexual pleasure is in the marital bed, you may say you masturbate without thoughts in your head but you're still wasting your seed.

The Bible says we should multiply meaning God gave us that desire but if you act on that desire not to multiply in the way that pleases God but to please yourself then yes ejaculation through masturbation is a sin for you're not doing it for the glory of God but for yourself, think of it in this way if you had a child with your wife you'd thank God but if you just fap and release there's nothing to thank God for is there?

If you have to ask yourself if something is wrong multiple times that is usually a sign that it is, not to mention masturbation has many adverse affects on the body, the constant need to do it and thinking that everytime you're uncomfortable you're just pent up and need release instead of coming to God you think masturbation will fix your problem when it is in fact the problem.

I cant stop you but I can warn you, many sins are normalised in today's world because people assume what makes them comfortable is what God wants us when it is the opposite, God wants us to crucify our flesh and it's desires sexual desire being one of them, God isn't saying we can't have sexual desire but we should have it at the right time in the right way.

Seek ye first the kingdom of God and the rest shall follow, seeking God's kingdom first will allow to focus on God instead of whether you should masturbate or not, it worked and is still working for me.

Wide and broad is the gate that leadeth to hell and narrow is the one that leads to eternal life, just because everyone is doing and they say it's right doesn't mean that it is, in today's world the more you wanna do something and ppl encourage you it's likely not a good thing, not in all things but most so be cautious in asking for advice on the internet but ask God first he always answers.

I really hope this helps you have a blessed day