Ideal way to switch jobs

In the past, I've taken up seemingly good offers asap out of fomo and bird in hand. I've also been rejected in the past as a newbie so I feel that way more so. Anyway, I was curious what the ideal way to switch jobs is and how much time one must allocate to this process. Do you tend to interview for practice initially, going for better companies later? Do you tend to schedule interviews optimally while somehow balancing current job? Wondering what's realistic and ideal.