There are two ordinances (sacraments) that, as far as I know, are observed by all the variations of Christianity. These are baptism and the Lord’s Supper (Holy Communion). You can see already that they are given different names in different traditions and when it comes to understandings and practices there are even more versions that we could look at. I am not going to try to sort these things out and tell you which ones are “right.”
What I believe is that these are done properly when they are done in faith. I think that if we and our churches were all that we should be that the Holy Spirit would come upon us at our baptism as was the case with Jesus. In like manner, when we eat the bread and drink the wine (grape juice) at the Lord’s Supper I believe we could be in the spiritual presence of Jesus.
Fortunately, God has in this case, as in everything, made accommodation for our imperfections. I believe we can participate in and partake of the ordinances and be blessed because of our obedience in doing what we are told that we should do.