I have not been through all the thread sorry, so sorry if this has been suggested.
I am atheist, you seem to be a believer, but maybe you feel uncomfortable with what appears to be the hypocrisy of Church services?
If so, it might be a good idea to dig your Bible out and look up Matthew 6:5. "And when you pray, do not be like the hypocrites. For they love to pray standing in the synagogues and on the street corners to be seen by men."
It's part of the Sermon on the Mount. and is allegedly the direct words, perhaps even an order. of Jesus Himself.
So this NT verse, from the Man himself, justifies your position. Indeed, the fact that is a direct order does maybe suggest that attending Church is a sin. It's an interesting thought.
So you can say you are a Christian without going to Church, and you are following what Jesus instructed.
This in an interesting verse. It is totally clear, in context too, but look it up on any Christian website, and witness the mental gymnastics.
It is also worth noting that the Bible does not mention Jesus going to a funeral There is Luke 7:14, but it's not stated if that's a funeral. That's a raise the dead bit. In fact, funerals are hardly mentioned at all in the Bible. OT and NT.
There is Jer 16:5, but the context is wrong for your position. That's an old vengeful God bit.
In my view, if anyone tries to pressure anyone with religion, just quote back a verse that supports your position.
And in this case, It's Jesus himself that agrees with your position. And there is nothing in the Bible saying you are wrong. In effect, you are following one more order from Jesus than other many other Christians.
Matthew 6:6 " But when you pray, go into your room, close the door and pray to your Father, who is unseen. Then your Father, who sees what is done in secret, will reward you."
So yeah, if you are Christian, follow your Bible.
Sorry for your loss.