Welcome!
Tell us a bit about your use case, for example:
Is portability more important or having more gears and speed?
How important is weight?
Will you be riding a lot of hills? If so, how steep & long?
What's your budget? You can spend as much or as little as you want. Would you rather have a lesser bike and have budget for a second one (for a spouse or kid) or just start with a higher-end one?