Many Christians can feel differently about this topic. Some Christians love the holidays (especially Christmas) and the sparkling lights, the scents, the Christmas trees, the presents, etc. Other Christians are more cautious and are willing to give up some of these things because of their history.
Got Questions has articles regarding the holidays such as these ones:
https://www.gotquestions.blog/Christian-Christmas.html
https://www.gotquestions.blog/Christians-and-Easter.html
These articles make a good point that these holidays do have Christian aspects, and we can use them as opportunities to spread the gospel.
The Bible says that some Christians used to spread the gospel out of jealousy of apostle Paul:
"Some, to be sure, are preaching Christ even from envy and strife, but some also from good will; the latter do it out of love, knowing that I am appointed for the defense of the gospel; the former proclaim Christ out of selfish ambition rather than from pure motives, thinking to cause me distress in my imprisonment. What then? Only that in every way, whether in pretense or in truth, Christ is proclaimed; and in this I rejoice." (Philippians 1:15-18)
But Paul rejoiced that whether in pretense or in truth the gospel is spread.
So while these holidays have pagan aspects, we can still celebrate them and use them to point others to Christ.
Celebrating these holidays is not the same as Israelites worshipping other gods. When a person worships another god, that person is knowingly bowing down to that god and clearly idolizing. However, when a person puts up a Christmas tree, that person is not bowing down to that tree or worshipping it.
So these acts are clearly different, and cannot be put on the same level at all.
Having some Christmas decorations is not a sin. And it may not be wise to crusade around telling others what they can and cannot put up as decorations during these holidays. Doing so can cause unnecessary divisions in the church, while our focus should be centered on celebrating Christ.
However, we can think about this in another way as well. Ask yourself the questions: If Jesus were to come into my home during the holidays, would He want to see me taking kids to an Easter egg hunt? Would Jesus want to see a kiss under a mistletoe? What kinds of decorations in the house might Jesus like or dislike?
Considering these questions, if there are things or activities you don't think Jesus would like, then don't have them or participate in them.
We can still redeem the holidays by focusing on God, singing hymns to Him, and if we are willing, perhaps giving up some of the traditions that have pagan connections.
However, it is impossible to be disassociated with all pagan connections. Did you know that the days of the week all have pagan associations?
Yes, it's true.
Monday = Moon's day (worship of moon)
Tuesday = Tiw/Tyr's day (associated with Germanic/Norse war god)
Wednesday = Woden's day (or Odin in Norse mythology)
Thursday = Thor's day (Norse god of thunder)
Friday = Frig's day (Germanic goddess of love and fertility)
Saturday = Saturn's day (Roman god Saturn)
Sunday = Sun's day (worship of sun)
As you can see, we live in a world full of pagan traditions, even each day of the week is named after them. So it is impossible to live in this world and be completely disconnected from pagan history.
Jesus said, "I do not ask You to take them out of the world, but to keep them from the evil one. They are not of the world, even as I am not of the world. Sanctify them in the truth; Your word is truth. As You sent Me into the world, I also have sent them into the world. For their sakes I sanctify Myself, that they themselves also may be sanctified in truth." (John 17:16-19)
So let us sanctify ourselves in the truth of God's word. This is the most important. The heart of the matter is to worship God, be thankful to Him, and to keep unity among our brothers and sisters in Christ. This is what Jesus truly wants. Everything else is secondary.
Since Christian holidays are an opportunity to communally celebrate Jesus, we are free to celebrate them as a body in Christ. When non-Christians ask us what those holidays mean, we can tell the true meaning of these holidays -- about Jesus' birth and resurrection, and about being thankful to God for all that He provides.