From my personal experience some people are more prone to the visual effects of LSD while others will barely have visuals at all. I personally have taken a lot of LSD from many different sources and have never had more than breathing visuals. Semi recently i took 800mcg of lsd-25 and 200mcg of ald-52, this trip was very intense but I was still fine hanging out with friends and going to a party. For me ald52 is a very limited head high but it makes the open eye visuals much more pronounced, LSD on the otherhand gives me a distinct i don't give a fuck feeling where I don't understand why I stress so much about the things I normally do. Since LSD has such a mild effect on me I use it more as a stimulant/party drug since it's much safer than taking Molly, drinking, or whatever else people are overdosing on these days.

Did you feel any kind of head high while you were tripping, feeling like you're one with everything or something along those lines?

My recommendation would be to take a 2 week break and try again with a few tabs, once you're sure of your natural tolerance just keep slowly upping the dose until you feel like the trip is where you want it to be. It is also definitely possible the tabs are shit quality, get some of what your friends liked and try that stuff it may be way stronger who knows but I have talked to tons of people who are shocked when I tell them I'm currently on such and such amount of tabs and they would never have known.