Hi CBD1000,
Sequencers is a large chapter on its own... that's never going to be easy and to be answered in just a few sentences or even in a few messages...
Having said that, let's give it a try :-)
I have intensively checked sequencers for Eurorack and I came to the conclusion that the ideal and perfect sequencer doesn't exist, same as the ideal and perfect synthesizer doesn't exist.
For details on my post regarding sequencers please check out this one:
https://www.modulargrid.net/e/forum/posts/index/7899
For an interesting list of sequencers, check this link:
http://doudoroff.com/sequencers/
I ended up (after about one-and-a-half year of checking!) with the Five12 - Vector and the Five12 - Jack Expander module combination and so far I am extremely happy with it. It has a very direct control of it, almost no menu diving and still it's very clear what one is doing, changes have immediate (happy) effects, it's just a great thing to use. There is only one big con with this suggestion and that's the finance of it... other than that I can recommend it without any hesitation.
Good luck with it and kind regards, Garfield Modular.
For review reports of Eurorack modules, please refer to https://garfieldmodular.net/ for PDF formatted downloads