I feel like as soon as I acknowledge my bad feelings, they automatically get suppressed. Any tips?

I have alot of problems with this and I question alot if I do avoid my emotions cause today everyone says to "feel your emotions, let them be" but it just makes me be stuck with suffering. Currently I have a problem at my job, it's really stressful and i feel like everyone thinks im stupid and a bad person and it's hard, I struggle with negative emotions and I rumminate alot about the things, what couldve happened,what will happen and sometimes it makes me feel helpless cause idk what to do. But when it happens I don't let myself feel helpless, I don't know why you should let yourself feel anything like hopelessness,helplesnees,or let yourself tell any story that will not help you. I acknowledge it that it came up, but I won't let it to continously be there. I never understood that when you have these feelings, sitting with them makes you just follow the story that is unhealthy. I feel things that are unhealthy for me and i tried to sit with it and made me feel worse being stuck with that emotion. I start to think that people who actually has avoidance problems they dont notice how they feel, when I do notice I just choose not to go on that path. I question grief too alot. Everyone grieves differently so that's why is difficult but I don't like when people say that grief will never end and if you feel better about your loss you are just lying to yourself... Ofcourse you will never feel happy about anything you lost in your life. When i dealt with grief I noticed it, back then i thought okay i have to sit with the pain but then it got worse and worse and I felt like im stuck in my pain. Then I decided I have to move and im not 100%over, i dont even know what that means cause as I said you will never feel happy about any loss you experienced,but thats a different thing, you can still live your life with that,but if its been years and you still think life sucks and nothing is good then youre stuck with grief. This is not judging anyone who is not over grief, But it's problematic for me when I say i wont let this emotion to rule my day, and then i feel like im supressing it... or when people say "just let it be there" then my focus is on that being there, so to change your focus to your life you have to ignore the feelings, and people say "no,you dont" but thats what you have to do... To choose that you will live your life and you will focus on something else no matter what means that you will ignore the feelings, you can still notice it but you give no power to them. That's called ignoring it... I have to learn what supressing feelings really means cause everytime I try to live my life I say i supress my emotions cause it feels like that. I hope someone will read this, either will help him or he will help me understand things more, so if you read this, thank you for your time! :)

But it actually feels worse, and no not because now Im letting myself feel the feelings, I feel more stressful and hopelessness sparked out too, and a weird scary feeling, i think its anxiety, that i feel back in the pandemic and I woke up at the middle of the night feeling that feeling many times.For years i felt good now that im trying to let myself feel the emotions, fear and hopelessness kicks in. I understand that you should accept and allow every feeling, but if you have alot of fear it will just throw you wherever it wants and you will feel hopeless. I know when you are there, feeling depressed and hopeless it means you did something bad(well not always but you know what i mean). I tried it but this scary feeling of hopeless anxiety made me stop it.

I know the solution is to always say “yeah that could be true, but I am choosing to live my life anyway.” However, I feel like my biggest issue is my brain always assuming that it is immediately true when I do that. Like if I say “maybe I’m attracted to teenagers, it’s possible,” then my brain INSTANTLY starts rationalizing that thought and defending it and being like “oh okay so you think this now and it makes sense because xyz, and now that’s who you are and your real desire is now and always will be teenagers.” I feel really alone in this area of feeling like my brain “accepting the thoughts” means my brain immediately accepts them as true. I obviously don’t want to think they’re true but I feel so stuck now.